Coronavirus: Head of NHS Test and Trace Dido Harding self-isolating

The head of NHS Test and Trace is self-isolating after receiving a notification from the NHS mobile app.

Baroness Dido Harding tweeted that she was "feeling well" after getting the alert overnight.

"Nothing like personal experience of your own products," she added. "Many hours of Zoom ahead."

It comes a week after her husband, Conservative MP John Penrose, was told to isolate by the app, and days after Boris Johnson began self-isolating.

The prime minister was told to stay at home after having a meeting with Tory MP Lee Anderson, who has since tested positive for coronavirus.

If a person who uses the NHS app tests positive for coronavirus, they can choose to share their result anonymously.

The NHS then sends alerts to other app users who have spent time near them or been in "close contact" - meaning they have been within two metres for 15 minutes or more.