When the story broke on Thursday, Ken gave support to the Tory who beat him, saying Boris was right to 'stick by his man' unless and until the allegations produced evidence.
But with Boris's choice of Deputy Mayor Ray Lewis forced to resign after it was revealed he wasn't even a magistrate as he claimed, Ken told the BBC Today programme this morning:
In a mere two months in office Boris Johnson has already suffered the second resignation from among his most senior officials - Deputy Mayor Ray Lewis following Deputy Chief of Staff James McGrath two weeks ago.Spot on Ken!
In my entire eight years in office I suffered only one enforced resignation of any of my most senior officials, Lee Jasper - and that only after seven years.
This extreme contrast shows vividly the incompetence of Boris Johnson and his administration.
It is an equal crisis for David Cameron who, it should be remembered, chose to make his first photo opportunity as Tory leader with Ray Lewis.