Official Statistics

Operation of police powers under the Terrorism Act 2000 and subsequent legislation: Arrests, outcomes and stop and searches, Great Britain, 2012 to 2013

Updated 12 September 2013

1. Summary points

1.1 Arrests and outcomes

There were 249 persons arrested for terrorism-related offences in 2012/13, up from 206 in 2011/12. Forty-two per cent of terrorism arrests in 2012/13 resulted in a charge, up 2 percentage points on 2011/12. Of the charges brought, 35% were terrorism-related.

At the time of publication, 23 of the 37 persons charged with terrorism-related offences had been convicted of an offence, with 13 defendants awaiting trial and 1 not proceeded against.

1.2 Court proceedings

Data provided by the Crown Prosecution Service show that 13 of the 18 trials completed during the year for offences under terrorism legislation resulted in convictions. All 4 terrorism-related trials for offences under other legislation resulted in convictions.

Sixteen of the 17 defendants convicted were sentenced to immediate custody, none of whom received a life sentence. The remaining 1 defendant received a hospital order.

1.3 Terrorist and extremist prisoners

As at 31 March 2013, 121 persons were in prison custody in Great Britain for terrorism-related offences, just under three-quarters of whom were UK nationals. Eighteen prisoners were classified as domestic extremists/separatists. Thirty-nine persons were released during 2012 to 2013.

1.4 Stops and searches

No searches were made by the police in Great Britain under section 47A of the Terrorism Act 2000 (TACT) in 2012/13. To date, no searches have been made in Great Britain under this power.

A total of 56,257 persons were stopped at ports in Great Britain under Schedule 7 of TACT, a fall of 12% on 2011/12.

The Metropolitan Police Service stopped and searched 582 persons under section 43 of TACT. This represents a 29% fall on the 2011/12 total of 818. The arrest rate for s43 searches was 5.5%, up 2 percentage points on the previous year.

2. Arrests and outcomes

2.1 Introduction

Statistics are presented here on the number of persons arrested by police in Great Britain, where there is suspicion of involvement with terrorism. Outcomes of these arrests are also included up to the stage of prosecution, release, or other outcome. The information presented here was provided by the Association of Chief Police Officers’ Counter Terrorism Co-ordination Centre (ACTCC), based on the latest position with each case at the date of data provision (10 July 2013) and covers the period up to 31 March 2013.

2.2 Arrests

The relatively small numbers of persons arrested for terrorism-related offences each year mean that proportionally large fluctuations in arrests can result from particular police operations, or individual cases involving multiple suspects.

There were 249 persons arrested for terrorism-related offences in 2012/13, an increase of 21% on the previous year and almost double the 125 arrests made in 2010/11. The annual average of terrorism-related arrests since 2002/03 was 210 per year, with a peak of 284 arrests in 2005/06.

Terrorism-related arrests can be made under the Police and Criminal Evidence Act (PACE), or under section 41 (s41) of the Terrorism Act (TACT) if arresting officers require additional powers of detention or need to arrest a person suspected of terrorism-related activity without a warrant. The decision on whether to arrest a person suspected of terrorism-related activity under s41 of TACT or PACE is an operational decision for the police.

In recent years, the proportion of all terrorism-related arrests made under s41 of TACT has fallen consistently, from 96% in 2005/06, to 23% in 2012/13. In terms of numbers, s41 TACT arrests peaked at 272 in 2005/06, falling to 50 in 2010/11 and 2011/12 and rising slightly to 57 in 2012/13. Although there has been some fluctuation in the numbers of terrorism-related arrests under other legislation in recent years, numbers have risen substantially over the period from 2005/06 to 2012/13, from 12 to 192. The largest increase seen during the period in numerical terms was from 2010/11 to 2011/12, where the number of arrests more than doubled from 75 to 156.

Since 11 September 2001, when the current data collection was set up by the police service, there have been 2,419 terrorism arrests in total.

Persons arrested under section 41 of the Terrorism Act 2000 or under other legislation

Source: Home Office, Operation of police powers under the Terrorism Act 200 data table A.01.

2.3 Pre-charge detention under section 41 of the Terrorism Act 2000

Pre-charge detention assists the police in the investigation and accumulation of evidence pertaining to potential terrorism offences. Further information on these powers is given in the User Guide.

In 2012/13, as in previous years, most detainees continue to spend a short time in pre-charge police custody, with 18% detained for less than a day, a quarter detained for less than 2 days and 91% detained for 7 days or less.

From 25 July 2006 to 25 January 2011 the maximum period of pre-charge detention was extended to 28 days. During this period, 6 individuals were held for more than 27 days (all in 2006/07), of whom 3 were charged and 3 were released without charge.

2.4 Charges and charging rates

Of the 249 persons arrested for terrorism-related offences in 2012/13, 105 (42%) were charged, a further 105 (42%) were released without charge and 39 (16%) had alternative action taken against them, the latter of which mainly comprised of those being bailed to return pending further investigation. This compares to 37% charged, 54% released without charge and 9% with alternative action taken since 11 September 2001. Charging rates from 2002/03 to 2012/13 have ranged from 26% in 2005/06 to 48% in 2006/07.

Number of charges resulting from terrorism-related arrests

Source: Home Office, Operation of police powers under the Terrorism Act 200 data table A.04.

Often, terrorism-related arrests can result in charges for non-terrorism-related offences as the police investigate cases and new information comes to light.

Of the 105 charges brought in 2012/13, 37 (35%) were terrorism-related, comprising 31 under TACT legislation, 4 under Schedule 7 of TACT for failure to comply with border controls and a further 2 for terrorism-related offences under other legislation. The remaining 68 charges (65%) were for other non terrorism-related offences. For the 897 charges since 11 September 2001 the breakdown was: 347 (39%) under TACT; 28 (3%) under Schedule 7 of TACT; 141 (16%) for terrorism-related offences under other legislation and the remaining 381 (42%) for other non terrorism-related offences.

2.5 Charges by offence

In line with the normal procedures for criminal justice statistics, each suspect has been classified in terms of a single principal offence. This means that where an individual has been charged with a number of offences they are recorded only against the most serious offence.

For the 375 persons charged under terrorism legislation since 11 September 2001 the main principal charges were related to:

• possession of an article for terrorist purposes (20% of such charges);
• preparation for terrorist acts (17%);
• collection of information useful for an act of terrorism (12%);
• fundraising (11%);
• membership of a proscribed organisation (9%).

For the 141 persons charged under non-terrorism legislation where the offence was considered terrorism-related, the most prevalent principal charges were:

• conspiracy to commit murder (25%);
• offences under the Explosive Substances Act 1883 (16%);
• soliciting to commit murder (6%);
• offences under the Fraud Act 2006 (6%).

In addition to the above charges, a total of 381 persons have been charged with offences identified by ACTCC to be non-terrorism-related. The most frequent principal charges were for:

• perverting the course of justice (10%);
• Forgery and Counterfeiting Act 1981 (10%);
• Theft Acts 1968 and 1978 (9%);
• Misuse of Drugs Act 1971 (6%);
• Identity Cards Act 2006 (6%);
• Firearms Act 1968 (6%).

2.6 Court proceedings and outcomes of charges

This section considers the outcomes for persons charged, based on year of arrest. Due to the complex nature of terrorism investigations, trials may take place several years after an arrest or charge takes place. Those tried in 2012/13 can relate to arrests made in 2011/12 or earlier.

Of the 37 persons arrested and charged in 2012/13 for terrorism-related offences, 23 were proceeded against, all of whom were subsequently convicted. An additional 13 persons were awaiting prosecution and the remaining person was not proceeded against. Of the 23 convicted, 21 were under terrorism legislation and 2 were for non-terrorism legislation. As for previous years, it is expected that the number of convictions will change depending on the outcomes for those awaiting prosecution.

Since 11 September 2001, 516 persons have been charged with terrorism-related offences, of which 431 were prosecuted. Of these, 195 were convicted under terrorism legislation and a further 135 were convicted of non-TACT offences. In total, 64% of persons charged with terrorism-related offences have been convicted since 11 September 2001; however, this rate is likely to change depending on the outcome of cases for 15 persons awaiting prosecution at the time of publication.

Outcome¹ for persons charged^2,3 with terrorism-related offences

Number of persons												Great Britain
						Year of arrest
Charging outcome	2001/02	2002/03	2003/04	2004/05	2005/06	2006/07	2007/08	2008/09	2009/10	2010/11	2011/12	2012/13	Total
Charged	21	64	49	35	50	79	53	40	27	19	42	37	516
Not proceeded against	3	14	11	6	3	8	9	6	1	3	4	1	69
Awaiting prosecution	-	-	-	-	-	-	-	-	-	-	2	13	15
Other outcome	-	-	-	-	-	1	-	-	-	-	-	-	1
Prosecuted	18	50	38	29	47	70	44	34	26	16	36	23	431
Convicted4	11	37	20	24	40	54	30	26	20	16	29	23	330
TACT offences	5	9	6	3	20	33	23	16	9	11	23	19	177
Schedule 7 TACT	-	3	-	1	6	1	2	1	2	-	-	2	18
Other legislation (non-TACT)	6	25	14	20	14	20	5	9	9	5	6	2	135
Found not guilty	7	13	18	5	7	16	14	8	6	-	7	-	101

1. Since 11 September 2001. Data presented here are based on the latest position with each case as at the date of data provision from ACTCC (10 July 2013).
2. Includes all charges under terrorism legislation and under other legislation where considered by ACTCC to be terrorism-related.
3. Refers to the substantive charge at indictment recorded by the Crown Prosecution Service.
4. Excludes cases when a conviction was later quashed on appeal.

Source: Home Office, Operation of police powers under the Terrorism Act 200 data table A.06c.

2.7 Persons convicted by offence

The most frequent principal charges for persons convicted since 11 September 2001 under terrorism legislation were:

• preparation for terrorist acts (26% of persons convicted);
• collection of information useful for a terrorism act (16%);
• failing to comply with an examination at a port or border controls (10%);
• possession of an article for terrorist purposes (9%).

The main principal convictions since 11 September 2001 which were considered terrorism-related but under non-terrorism legislation were:

• causing or conspiring to cause an explosion under the Explosive Substances Act 1883 (19% of persons convicted);
• conspiracy to murder (13%);
• offences under the Forgery and Counterfeiting Act 1981 (12%);
• Firearms Act 1968 offences (9%).

Details of terrorism arrests that subsequently resulted in a non-terrorism-related charge or conviction can be found in Tables A.07 and A.08c.

2.8 Gender, age and ethnic appearance of persons arrested, charged and convicted

Of the persons arrested for terrorism-related offences since 11 September 2001, 93% were male. This is similarly reflected in terrorism-related charges and convictions, with males making up 94% and 95% of the total respectively. Full breakdowns can be found in Table A.09.

Since 11 September 2001, the age group with the highest proportion of persons arrested, charged, and convicted for a terrorism-related offence was the 30 and over age group, comprising 47% of persons arrested, 42% of persons charged and 41% of persons convicted. Full breakdowns can be found in Table A.10.

More than a third (37%) of all persons arrested since 11 September 2001 were recorded by police as being of Asian ethnic appearance. Proportions for other recorded ethnicities at arrest were: 29% White, 22% Other and 11% Black. Similar proportions were seen at charge and conviction; again, those recorded as Asian made up the largest proportions at charge (38%) and at conviction (42%). Full breakdowns can be found in Table A.11.

2.9 Nationality of persons arrested, charged and convicted

Statistics are also provided on the self-declared nationalities of persons arrested for terrorism-related offences. These self-declared nationalities may differ from the actual nationalities of persons arrested; this must be borne in mind when interpreting the figures presented below.

Of the 2,419 persons arrested for terrorism-related offences since 11 September 2001, 1,198 (50%) self-declared their nationality as from Great Britain or of British dual nationality. Of the remaining persons arrested the most frequent self-declared nationalities were: Algeria (152 persons), Pakistan (125 persons), Iraq (115 persons), Afghanistan (74 persons), Iran (63 persons), India (56 persons), Turkey (45 persons) and Somalia (44 persons). Full breakdowns for all nationalities self-declared at arrest can be found in Table A.13a. Data on charges and convictions for terrorism-related offences broken down their self-declared nationality at the time of arrest are in Tables A.13b and A.13c.

2.10 Categorisation of persons arrested and charged

Data on the categorisation of those arrested and charged are published in this bulletin. The categories are based on involvement with any type of terrorism and separately identify those associated with domestic, international and Northern Ireland Related Terrorism (NIRT). The data also include persons found not to be associated with any type of terrorism at the time of arrest or charge. These categories are based on assessment by ACTCC and may not be mutually exclusive in all cases. Additionally, the categories may change as cases progress and further information on each case comes to light. Full definitions of these categories can be found in the User Guide.

Of those arrested since 11 September 2001, 80% were classified as international with 11% classified as domestic and 7% were classified as associated with NIRT. Full breakdowns of classifications of those arrested, charged and convicted can be found in Table A.13.

2.11 Data tables

Data on persons arrested for terrorism-related offences, and the resulting charges and other outcomes, can be found in Operation of police powers under the Terrorism Act 200 data tables A.01 to A.13.

2.12 Data quality and interpreting the figures

The relatively small numbers of persons arrested for terrorism-related offences each year mean that proportionally large fluctuations in arrests can result from particular police operations, or individual cases involving multiple suspects. This should be borne in mind when interpreting trends over time.

In line with the normal procedures for criminal justice statistics, and in order to present an accurate count of the number of persons arrested and charged, data in this part (arrests and outcomes) are presented on a principal offence basis. This means that, when a person is arrested or charged for multiple offences at the same time, the most serious offence is the one counted in these data. If a person arrested or charged is subsequently arrested on another occasion for a different offence, the additional arrest will also be counted in the data.

Due to the complex nature of terrorism investigations, a trial may take place several years after an arrest or charge takes place. Trials completed in 2012 can relate to arrests made in 2011 or earlier. Since the data on arrests and outcomes presented here are based on time of arrest and court proceedings data presented in part 3 (court proceedings) are based on time of trial outcome, data drawn from both may not be directly comparable.

The data presented are based on the position as at 10 July 2013, when case information was provided to the Home Office by ACTCC. As cases progress over time, outcomes can change and therefore figures for quarters previously published may be updated in this release.

3. Court proceedings

3.1 Introduction

Statistics are presented here on the number of defendants tried by the Crown Prosecution Service Counter Terrorism Division (CPS CTD) in 2012/13. Data shown here are based on final trial outcomes for each defendant (i.e. when all proceedings in each case are concluded), and are presented on the principal, or most serious, offence basis. Results of partially completed trials are not included.

3.2 Defendant trials

Due to the complex nature of terrorism investigations, trials may take place several years after an arrest or charge takes place. Trials completed in 2012/13 can relate to arrests made in 2011/12 or earlier.

In 2012/13, 18 trials were completed by the CPS CTD for offences under terrorism legislation. Of these, 9 were for collection or possession of information for terrorists, 3 were for preparation for terrorism acts, the remaining trials were for fundraising (2 trials), contravening a Terrorism Prevention and Investigation Measures order (2 trials), encouragement of terrorism (1 trial) and breach of a control order (1 trial).

Of the 18 terrorism-legislation trials completed in 2012/13, 13 (72%) resulted in a conviction.

Additionally in 2012/13, 4 trials were completed for terrorism-related offences under non-terrorism legislation. This total included 3 trials for arson endangering life and 1 trial for causing a bomb hoax. All of these 4 trials ended in conviction.

3.3 Sentencing

In 2012/13, 13 defendants were convicted under terrorism legislation and 4 were convicted under non-terrorism legislation.

Each of the 13 defendants convicted under terrorism legislation received custodial sentences (including one hospital order). No life sentences were handed down in 2012/13; the longest sentence given was for a period of 10 to 20 years in custody (1 person), the majority of those convicted received sentences of between 1 and 4 years (8 persons), and the remaining 4 defendants were sentenced to less than 10 years.

All 4 defendants convicted under non-terrorism legislation received a custodial sentence of between 4 and 10 years.

Of all 17 persons convicted in 2012/13, 15 had pleaded guilty, with the other 2 defendants pleading not guilty.

3.4 Appeals

There were 7 appeals against terrorism convictions heard by the courts in 2012/13, all of which were dismissed.

3.5 Data tables

Data on court proceedings dealt with by CPS CTD can be found in Operation of police powers under the Terrorism Act 200 data tables C.01 to C.04.

3.6 Data quality and interpreting the figures

In line with the normal procedures for criminal justice statistics, and in order to present an accurate count of the number of persons dealt with by CPS CTD, data in part 3 (court proceedings) are presented on a principal offence basis. This means that, when a person is proceeded against for multiple offences at the same time, the most serious offence is the one counted in these data. If a person is subsequently proceeded against on another occasion for a different offence, the additional case will also be included in the dataset.

Due to the complex nature of terrorism investigations, trials may take place several years after an arrest or charge takes place. Trials completed in 2012 can relate to arrests made in 2011 or earlier. Since the approach used in part 2 (arrests and outcomes) is based on time of arrest and the approach used here is based on time of trial outcome, data drawn from both may not be directly comparable.

4. Terrorist and extremist prisoners

4.1 Introduction

Data presented here are provided by the National Offender Management Service and Scottish Prison Service, and show the number of persons who were in prison custody for terrorism-related offences and the number of domestic extremist prisoners in Great Britain as at 31 March 2013. Data on prisoners released in 2012/13 are also included.

4.2 Key facts

As at 31 March 2013, there were 121 terrorist/extremist prisoners in Great Britain, either on remand or following conviction. In total 102 prisoners were terrorism-related, of whom 64 were in custody for offences under terrorism legislation, 33 for terrorism-related offences not under terrorism legislation and a further 5 were held in relation to deportations and extraditions. Eighteen prisoners were classified as domestic extremists/separatists, 13 of whom were in custody following conviction, with 2 on remand and 3 extradition cases. Lastly, 1 person was in custody with historic convictions pre-dating current terorrism legislation.

Sixty-seven of the 121 prisoners in Great Britain remanded or convicted for terrorism-related offences defined themselves as of Asian (or Asian British) ethnic origin at the time of reception into custody. Eighteen defined themselves as Black (or Black British).

Terrorist/extremist prison population as at 31 March 2013

Source: Home Office, Operation of police powers under the Terrorism Act 200 data table P.02.

The nationalities of the 121 terrorist/extremist prisoners in Great Britain were spread over 15 countries. Ninety were recorded as being UK nationals, 11 were from the African continent (including 4 from Somalia and 2 from each of Algeria and Morocco), 5 were from non-UK European countries, 11 were from Asian countries (including 6 from Bangladesh) and 2 were from the Middle East (1 from Jordan and 1 from Kuwait).

In terms of the self-declared religions of the 103 terrorism-related and historic prisoners, 100 defined themselves as Muslim. For the 18 domestic extremists/separatists the picture was more mixed, with 6 declaring no religion, 3 declaring as Muslim and the remaining persons declaring a range of other religions including Roman Catholic (2), Anglican (1), Buddhist (1) and other Christian (1).

Thirty-three terrorist/extremist prisoners were released in England and Wales in 2012/13 on completion of a custodial sentence. Of these, 2 had been serving a life sentence; 15 had served sentences of 4 years or more and the remaining 16 were released after serving sentences of less than 4 years. Additionally, 6 unconvicted prisoners were released from custody, each of whom were either deported, released on UK Border Agency bail or extradited.

4.3 Data tables

Data on persons in prison custody can be found in Operation of police powers under the Terrorism Act 200 data tables P.01 to P.05.

4.4 Data quality and interpreting the figures

Data presented here on terrorist and extremist prisoners include persons held on remand as well as those held after conviction and/or sentencing. They also include prisoners for historic terrorism cases originating from before 11 September 2001, who are not included in the arrests and outcomes data presented in part 2.

5. Stops and searches

5.1 Introduction

Statistics are presented here on the use of certain stop and search procedures available to police under the Terrorism Act 2000 (TACT).

Section 47A (s47A) of TACT allows the police to stop and search persons in order to prevent acts of terrorism, without reasonable suspicion of their involvement in terrorism. Searches under this power may only be authorised in a specific area for a defined period where the police reasonably suspect an act of terrorism will take place. On 18 March 2011, s47A stop and search powers formally replaced stop and search powers under section 44 of TACT. There has, as yet, been no use of stop and search powers under s47A in Great Britain.

Also available to the police are powers of stop and search under section 43 (s43) of TACT, where an officer does not need an authorisation as under s47A, but instead must have reasonable suspicion that the person is involved in terrorism-related activity. Data on searches under these powers presented here cover the Metropolitan Police Service area only.

Also included here are data on examinations made at ports under Schedule 7 of TACT, and the use of police cordons under section 33 (s33) of TACT. Information on the legislative background to these powers can be found in the User Guide.

5.2 Stops and searches under sections 44 and s47A of the Terrorism Act 2000

Section 44 (s44) of TACT provided police officers with the power to stop and search persons and vehicles for articles which could be used in connection with terrorism. Police forces were able to authorise use of s44 stops and searches within a particular area during an agreed period without the need of reasonable suspicion. Where powers were authorised for longer than 48 hours, the Home Secretary was required to confirm such authorisations. The majority of those police forces that regularly authorised the use of s44 ceased using the power to search persons following the Home Secretary’s statement on 8 July 2010. On 18 March 2011, all s44 powers were formally replaced with s47A of TACT stop and search powers, which have a significantly higher threshold for authorisation than s44 searches.

No searches were made by the police in 2011/12 or 2012/13 in Great Britain under s47A of TACT, compared with 9,744 in 2010/11 and 102,504 in 2009/10 made under s44 .

During 2009/10 and 2010/11, when searches under s44 were conducted, 3 resultant arrests were terrorism-related.

Summary of stops and searches and resultant arrests made under sections 44(1)(2) and 47A of the Terrorism Act 2000^1,2

Number and percentage			Great Britain
		Year of search
Number of searches and arrests	2009/10	2010/11	2011/12	2012/13
Number of searches	102,504	9,744	-	-
Number of resultant arrests	509	77	-	-
of which: Terrorism-related	2	1	-	-
Proportion of persons searched who were arrested (%)	0.5	0.8	-	-

1. Does not include ‘vehicle only’ searches
2. Includes figures from police forces in England, Wales, Scotland and the British Transport Police.

Source: Home Office, Operation of police powers under the Terrorism Act 200 data table S.01.

5.3 Stops and searches under section 43 of the Terrorism Act 2000

The Terrorism Act 2000 (TACT) also gives powers to individual officers to stop and search a suspect whom they must reasonably suspect is involved in terrorism activity under s43 of the Act. These powers, unlike those under s44/47A, do not require any authorisations from senior police officers, or the Home Secretary.

Information collected from the Metropolitan Police Service shows that in 2012/13, 582 persons were stopped and searched under s43 . This represents a 29% fall on the 2011/12 total of 818. The arrest rate for s43 searches was 5.5% in 2012/13, up 2 percentage points on the previous year.

Summary of stops and searches and resultant arrests made under section 43 of the Terrorism Act 2000

Number and percentage				Metropolitan Police Service
		Year of search
Searches and arrests	2009/10	2010/11	2011/12	2012/13	Change from 2011/12 to 2012/13 (%)
Searches	1,229	1,155	818	582	-29
Resultant arrests	26	37	29	32	-
Proportion of persons searched who were arrested (%)	2.1	3.2	3.5	5.5

1. Does not include ‘vehicle only’ searches

Source: Home Office, Operation of police powers under the Terrorism Act 200 data table S.04.

Of those stopped and searched under s43 of TACT, the proportion who defined themselves as White fell from 53% in 2009/10 to 36% in 2011/12, increasing slightly to 38% in 2012/13. During the same period, the proportion who defined themselves as Asian rose from 24% in 2009/10 to 37% in 2011/12, falling to 29% in 2012/13. For those who defined themselves as Black at the time of search, the proportion remained constant between 2009/10 and 2011/12 with an average of 10% during those years, rising to 14% in 2012/13. For those defined as Mixed, the proportion remained stable with an average of 3% across the period. Lastly, the proportion who defined themselves as Chinese or Other rose from 3% in 2009/10 to an average of 8% between 2010/11 to 2012/13.

5.4 Examinations under Schedule 7 of the Terrorism Act 2000

Under Schedule 7 of TACT individual examining officers can examine a person at a port area who is entering or leaving, or travelling by aircraft within, Great Britain. Depending on individual circumstances, an examination may consist of basic questioning, a search of property and/or a period of detention of up to 9 hours while investigations take place.

A total of 56,257 persons were stopped at ports in 2012/13 in Great Britain under this power, a fall of 12% on 2011/12. Of these, 53,992 (96%) were held for under an hour with the remaining persons held for over an hour. The proportion of examination of less than an hour in 2012/13 was similar to the previous 2 years.

Of those examined in 2012/13, a relatively high proportion of persons did not self-define their ethnicity at the time of search (9%); therefore proportions by ethnicity presented here exclude these persons. Of those that did self-define, 41% were White, 26% were Asian, 20% were Chinese or Other, 10% were Black and 4% were of Mixed ethnicity. The proportion self-declaring as White and Asian both fell in 2012/13, by 2 percentage points, whereas the proportion that were Chinese or Other rose by 2 percentage points. Proportions of Black and Mixed both rose by 1 percentage point in 2012/13.

In total, 667 persons were detained after a Schedule 7 examination in 2012/13, down 2% from 680 in the previous year. Excluding persons who did not self-define their ethnicity, proportions of detentions by ethnicity were very similar to the previous year, with small increases of 1 percentage point for White and Black and small falls for Mixed and Asian (1 and 2 percentage points respectively). The proportion of persons detained who self-defined as Chinese or Other remained the same in 2012/13.

The total number of Schedule 7 examinations can be seen in the context of 106.7 million arrivals in the United Kingdom in 2012/13. Assuming a similar number of departures through UK ports, this gives a proportion of approximately 0.03% (or 3 persons searched out of every 10,000 persons passing through UK ports in 2012/13).

5.5 Cordons under section 33 of the Terrorism Act 2000

Section 33 of TACT gives police officers of at least the rank of superintendent the power to authorise the use of a cordon in an area where it is considered expedient to do so for the purposes of a terrorist investigation. A police officer may order persons and drivers to leave cordoned areas, and prohibit pedestrian or vehicle access. Cordons are typically set up to investigate a suspected package or to deal with the consequences of a terrorism-related incident. Further information on the power can be found in the User Guide.

During 2012/13 there were 12 cordons set up under s33 of TACT in Great Britain, 4 of which were in the area covered by the Metropolitan Police Service.

6. Revisions analysis

Table 1 (below) compares 2011/12 figures on arrests and outcomes published in September 2012 (in Tables 1.01 and 1a) with those published in the present release (Tables A.01 and A.06c). Figures that differ are a result of case progression between the two releases, primarily accounted for by a number of persons arrested who were still awaiting charge or prosecution at the time of reporting of data in 2012, whose cases were then concluded prior to data reporting for the 2012/13 release. The large number of cases awaiting prosecution in the most recent year of each terrorism statistics release is highlighted accordingly in the commentary where it has an impact on the data presented.

Table 2 compares 2011/12 figures on arrests and outcomes published in September 2012 (chapter 2) with those published in September 2013 (part 5). The one change is due to a small revision made by the Metropolitan Police Service during the year.

Revisions analysis based on part 3 (court proceedings) and part 4 (terrorist and exremist prisoners) is not provided here because both parts present new data for 2012/13 only.

Table 1 Persons arrested for terrorism-related offences and outcomes for terrorism- related charges

Number and persons		Great Britain
	2011/12
Arrests and charging outcome	Published Sep 2012	Published Sep 2013
Arrested	206	206
Charged	39	42
Not proceeded against	3	3
Awaiting prosecution	17	2
Other outcome	-	1
Prosecuted	19	36
Convicted	16	29
TACT offences	8	23
Other legislation (non-TACT)	8	6
Found not guilty	3	7

Table 2 Stops and searches under section 43 of the Terrorism Act 2000

Number		Metropolitan Police Service
	2011/2012
	Published Sep 2012	Published Sep 2013
Section 43 stops and searches	819	818