The Met Police has finished its investigation, and the Sue Gray report has now been published in full. Boris Johnson has long urged people to wait until all the investigations were completed before making any conclusions.
A number of MPs said they would not comment, or make any decisions about the Prime Minister's future, until the report was completed. We asked Welsh MPs their feelings, but many were reluctant to comment.
Unless he resigns, the only way Boris Johnson can be ousted as leader of the Conservative party is if enough of his own MPs say he should face a no confidence motion. Backbench Conservative MPs meet as part of something called the 1922 committee. Currently the committee chair is Sir Graham Brady, MP for Altrincham and Sale West and he would have to receive letters from 15% of Tory MPs - currently 54 MPs - to trigger a leadership election. If that happened, Sir Graham would have to draw up a timetable for the election and set the rules. The number of letters he has is a closely guarded secret. MPs can also withdraw those letters at any time.
