Research and analysis

UKHSA testing and tracing statistics: information for users

A summary of explanatory information to support users of UK Health Security Agency (UKHSA) coronavirus (COVID-19) testing and tracing statistics.

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UKHSA publishes weekly statistics on contact tracing going back to when the NHS Test and Trace service started on 28 May 2020.

This document provides a summary of explanatory information to support users of these statistics.

Published 24 July 2020
Last updated 15 October 2020 + show all updates

15 October 2020
Added information on the new methodology for people tested and people testing positive.
20 August 2020
Updated to reflect that daily testing statistics will no longer be updated on GOV.UK, and clarifying who gets transferred to contact tracing.
6 August 2020
Updated to correct an error in how the number of people tested relates to the number of positive cases.
24 July 2020
First published.