Question to the Department of Health and Social Care:

To ask Her Majesty's Government how many people have downloaded the NHS COVID-19 application; how many contacts of people with COVID-19 tested positive after being traced through (1) the NHS COVID-19 application, and (2) other means, on each day since 1 January; and of such contacts, how many they were (1) able, and (2) not able, to communicate with.

As of 27 January 2021, the NHS COVID-19 app has been downloaded 21,629,902 times. As COVID-19 app users are anonymous, we cannot determine who has or has not been contacted by Test and Trace as well as receiving an app notification to self-isolate following contact with a positive case.

The information is relating to those communicated with is not held in the format requested, as data is not collected on a daily basis.