Live updates as Prime Minister Boris Johnson resigns and tells the nation he is 'sad to be giving up the best job in the world'
Boris Johnson has officially announced his resignation as Tory leader after ministers and MPs made clear his position was untenable.
He will remain as Prime Minister until a successor is in place, which is expected to be by the time of the Conservative Party conference in October.
Follow our live blog below for the latest updates and reaction throughout the day.