The PM’s chief adviser Dominic Cummings is to make a public statement and take questions over allegations he broke coronavirus lockdown rules.
Mr Cummings is facing calls from Labour and some Tory MPs to quit or be fired.
He travelled 260 miles with his family to be near relatives when his wife developed Covid-19 symptoms.
The PM has insisted his closest aide acted legally and within guidelines – but critics say the government’s lockdown message has been undermined.
Covid-19 (Coronavirus) news from BBC