How does the UK Prime Minister lead the country from self-isolation?

The UK Prime Minister and UK Health Secretary testing positive for coronavirus creates communications challenges for the two men leading the country’s response to the outbreak.
British Prime Minister Boris Johnson insisted he would still be able to work with his “top team” through “the wizardry of modern technology”, and the Government’s chief scientific adviser Sir Patrick Vallance said the Prime Minister was already using “digital tools” to manage meetings.