Boris Johnson ‘isolated and at risk of becoming uncontrollable’

Analysis: Tory sources say PM's aides are too inexperienced to handle toxic briefing wars in No 10

Boris Johnson is isolated in Downing Street with no longstanding trusted aides and at risk of becoming uncontrollable", Tory sources have said after he allegedly personally briefed against Dominic Cummings following confirmation that the prime minister had to foot a 58,000 refurbishment bill.

Several insiders who spoke to the Guardian described Johnson's two closest advisers, - the cabinet secretary, Simon Case, and Downing Street chief of staff, Dan Rosenfield - as insufficiently politically experienced to handle the toxic briefing wars in No 10.