Johnson faces a series of resignations and letters of no-confidence following his handling of Partygate and recent comments on Sir Kier Starmer. Credit: Adrian Dennis/Pool Photo via AP

At a Glance...

MP Aaron Bell submits letter of no-confidence

Submission of letter of no-confidence brings to total to around 20, though the exact number is not known.

A fifth aide has resigned following PM’s handling of “Partygate” and comments on Sir Kier Starmer.

Boris Johnson tells No 10 staff “change is good” and thanks outgoing staff for their contributions.