Juli Clover / MacRumors:

NHS COVID-19, a contact tracing app created by the UK government, launches in England and Wales with Exposure Notification API from Apple and Google  —  NHS COVID-19, a contact tracing app created by the UK government, is rolling out to residents of England and Wales as of today, with the app available from the iOS App Store.

source http://www.techmeme.com/200923/p55#a200923p55