Already gone.....
Breaking News:
PM adviser Dominic Cummings has left Number 10 with immediate effect, BBC political editor Laura Kuenssberg says.
Mr Cummings spoke to the PM earlier on Friday and it was decided it was best for him to go immediately after days of turmoil, our political editor said.
The PM's director of communications Lee Cain has also left.
This breaking news story is being updated and more details will be published shortly. Please refresh the page for the fullest version.
https://www.bbc.co.uk/news/uk-politics-54938050
