No10 spokesman:
‘The Prime Minister has today been notified by NHS Test and Trace that he is required to self-isolate as a contact of someone who has tested positive for COVID-19.
‘The Prime Minister will follow the rules and is self-isolating.
‘He will carry on working from Downing Street, including on leading the Government’s response to the coronavirus pandemic.
‘The PM is well and does not have any symptoms of COVID-19.’
Source: https://order-order.com/2020/11/15/test-and-trace-tell-boris-to-self-isolate/