Transparency data

Merger investigation outcomes

Outcomes of merger investigations carried out by the CMA under the Enterprise Act 2002.

• From: Competition and Markets Authority
• Published: 7 May 2014
• Last updated: 13 January 2025 — See all updates

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Annual merger investigation outcomes

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Merger inquiry outcome statistics

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The CMA investigates the impact of certain potential mergers and assesses how they could impact competition in the UK.

Tens of thousands of mergers take place each year where the CMA does not intervene – PwC estimated that 50,000 took place globally in 2023 alone. We only intervene if we think the deal is truly problematic and could have a negative impact on people, businesses or the UK economy.

In 2024, we considered 1,037 mergers but only formally investigated 38 (3.6%) of them.

Less than 1% of mergers considered in 2024 were blocked or abandoned.

This page includes:

• an overview of how many mergers we considered and investigated, and the investigation outcomes, in the full calendar years from 2022 to 2024

• the outcomes of all merger investigations completed in each financial year, from 1 April 2004 to the latest full month

Visit the CMA case finder for a list of all CMA investigations.

More information about overall UK merger activity is available from the Office for National Statistics’s quarterly statistical bulletin on mergers and acquisitions involving UK companies.

Published 7 May 2014
Last updated 13 January 2025 + show all updates

1. 13 January 2025

   More information about our annual merger investigation outcomes published.

2. 8 January 2025

   Data for December added to the page

3. 3 December 2024

   Data for November added to the page

4. 7 November 2024

   Data for October added to the page

5. 9 October 2024

   Data for September added to the page

6. 12 September 2024

   Data for August added to the page.

7. 7 August 2024

   Data for July added to the page

8. 3 July 2024

   Data for June added to the page

9. 10 June 2024

   Data for May added to the page

10. 7 May 2024

    Data for April added to the page

11. 8 April 2024

    Data for March added to the page

12. 7 March 2024

    Data for February added to the page

13. 1 February 2024

    Data for January added to the page

14. 9 November 2023

    Data for October added to the page

15. 11 October 2023

    Data for September added to the page

16. 6 September 2023

    Data for August added to the page

17. 4 August 2023

    Merger inquiry outcome statistics to July 2023 published.

18. 11 July 2023

    Data for June 2023 added to the page.

19. 8 June 2023

    Data for May 2023 added to the page.

20. 11 May 2023

    April stats added to the page.

21. 3 April 2023

    Data for March 2023 added.

22. 17 March 2023

    Merger inquiry outcome statistics updated.

23. 6 February 2023

    Merger inquiry outcome statistics updated.

24. 13 January 2023

    Merger outcome statistics updated.

25. 3 November 2022

    Merger inquiry outcome statistics to 31 October 2022 published.

26. 14 October 2022

    Merger inquiry outcome statistics to September 2022 published.

27. 8 September 2022

    Merger inquiry outcome statistics updated.

28. 3 August 2022

    Merger inquiry outcome statistics to July 2022 published.

29. 8 July 2022

    Merger inquiry outcome statistics to June 2022 published.

30. 17 June 2022

    Merger inquiry outcome statistics to May 2022 published.

31. 20 May 2022

    Merger inquiry outcome statistics to April 2022 published.

32. 14 January 2022

    Merger inquiry outcome statistics until December 2021 published.

33. 13 December 2021

    Merger inquiry outcome statistics until November 2021 published.

34. 3 November 2021

    Merger inquiry outcome statistics until October 2021 published.

35. 9 September 2021

    August merger inquiry outcome statistics published.

36. 4 August 2021

    July 2021 merger inquiry outcome statistics published.

37. 2 July 2021

    June merger inquiry outcome statistics published.

38. 10 June 2021

    Merger inquiry outcome statistics updated.

39. 7 April 2021

    March 2021 statistics added.

40. 11 February 2021

    January 2021 statistics added.

41. 11 January 2021

    December 2020 statistics added.

42. 2 December 2020

    November 2020 statistics added.

43. 9 November 2020

    October 2020 statistics added.

44. 9 October 2020

    September statistics added.

45. 4 September 2020

    Updated statistics to August 2020.

46. 6 August 2020

    Updated statistics to July 2020.

47. 3 June 2020

    Updated statistics to May 2020.

48. 13 May 2020

    Updated statistics to April 2020.

49. 5 March 2020

    February statistics added.

50. 3 February 2020

    Updated statistics to January 2020.

51. 9 January 2020

    Updated statistics to December 2019.

52. 10 October 2019

    Updated statistics to September 2019.

53. 11 September 2019

    Updated statistics to August 2019.

54. 7 August 2019

    Updated statistics to July 2019.

55. 4 July 2019

    Updated statistics to June 2019.

56. 13 June 2019

    Updated statistics to May 2019.

57. 10 May 2019

    Updated statistics to April 2019.

58. 15 April 2019

    Updated statistics to March 2019.

59. 6 March 2019

    Updated statistics added for February 2019.

60. 7 February 2019

    Updated statistics to January 2019.

61. 12 November 2018

    Updated statistics added for October 2018.

62. 2 October 2018

    Updated statistics added for September 2018.

63. 14 September 2018

    Updated statistics added for August 2018.

64. 7 August 2018

    Merger inquiry outcomes for July published.

65. 5 July 2018

    Merger inquiry outcomes published.

66. 15 June 2018

    Merger inquiry outcomes published.

67. 2 May 2018

    April 2018 outcomes spreadsheet attached.

68. 6 April 2018

    Updated statistics added for March 2018.

69. 6 March 2018

    Updated statistics added for February 2018.

70. 6 February 2018

    Updated statistics added for January 2018.

71. 3 January 2018

    Updated statistics added for December 2017.

72. 5 December 2017

    Updated statistics added for November 2017.

73. 31 October 2017

    Updated statistics added for October 2017.

74. 3 October 2017

    Updated statistics added for September 2017.

75. 4 September 2017

    Updated statistics added for August 2017.

76. 1 August 2017

    Updated statistics added for July 2017.

77. 3 July 2017

    Updated statistics added for June 2017.

78. 31 May 2017

    Updated statistics added for May 2017.

79. 4 May 2017

    Updated statistics added for April 2017.

80. 3 April 2017

    Updated statistics added for March 2017.

81. 1 March 2017

    Updated statistics added for February 2017.

82. 1 February 2017

    Updated statistics added for January 2017.

83. 3 January 2017

    Updated statistics added for December 2016.

84. 7 December 2016

    Updated statistics added for November 2016.

85. 1 November 2016

    Updated statistics added for October 2016.

86. 3 October 2016

    Updated statistics added for September 2016.

87. 7 September 2016

    Updated statistics added for August 2016.

88. 10 August 2016

    Updated statistics added for July 2016.

89. 5 July 2016

    Updated statistics added for June 2016.

90. 1 June 2016

    Updated statistics added for May 2016.

91. 9 May 2016

    Updated statistics added for April 2016.

92. 1 April 2016

    Updated statistics added for March 2016.

93. 3 March 2016

    Updated statistics added for February 2016.

94. 2 February 2016

    Updated statistics added for January 2016.

95. 5 January 2016

    Updated statistics added for December 2015.

96. 1 December 2015

    Updated statistics added for November 2015.

97. 2 November 2015

    Updated statistics added for October 2015.

98. 2 October 2015

    Updated statistics added for September 2015.

99. 9 September 2015

    Updated statistics added for August 2015.

100. 4 August 2015

     Updated statistics added for July 2015.

101. 20 July 2015

     Updated statistics added for June 2015.

102. 4 June 2015

     Updated statistics added for May 2015.

103. 13 May 2015

     Updated statistics added for April 2015.

104. 1 April 2015

     Updated statistics added for March 2015.

105. 12 March 2015

     Updated statistics added for February 2015.

106. 9 February 2015

     Updated statistics added for January 2015.

107. 14 January 2015

     Updated statistics added for December 2014.

108. 12 November 2014

     Updated statistics added for October 2014.

109. 1 August 2014

     Merger statistics added for July 2014

110. 6 June 2014

     Updated statistics for May 2014.

111. 7 May 2014

     First published.