One of the Mayor's deputies issued an apology today for apparently acting 'inappropriately' towards a female colleague.
She claimed that Stephen Greenhalgh - the Deputy Mayor for Policing - touched her in a lift.Boris Johnson has, in the last half an hour, issued an 'immediate review'.
Our Political Correspondent Simon Harris has the story.
The statement made by Stephen Greenhalgh is absurd. If he didn't do anything wrong why did he apologise? It looks like something did happen and Boris Johnson needs to get to the root of this immediately.
It is completely unacceptable that someone in such a senior position cannot recollect whether such a serious incident occurred only a few weeks ago.
Regardless of whether a formal complaint is made or not this needs investigating. This is a serious matter that needs urgent clarification. If it remains unclear or unresolved then he should step down.
I understand that this has been going on for four weeks, we need to know who knew what and when in the Mayor's Office, Boris needs to establish what has been going on.
Mayor Boris Johnsons's policing chief has apologised after claims he inappropriately touched a female City Hall worker in lift.
"I have no recollection of this event, and I understand no Complaint has been made.
Non the less I'd like to apologise unreservedly for anything that could be, or may have been, construed as inappropriate behaviour on my part."
The member of staff concerned has made it clear she does not wish to pursue the matter further.
She has also reiterated that she does not wish to make a complaint. The GLA has of course worked closely with the her at all times in accordance with it's proper procedures.
The London Assembly will question key figures from across the capital about lessons which can be learnt from the Olympic games. Lord Coe and Boris Johnson are two of the senior politicians who are preparing to face the panel this morning.
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The GLA will hold its Annual Service of Remembrance for London's war dead in the Chamber at City Hall today.
Mayor of London Boris Johnson and Deputy Chair of the London Assembly, Darren Johnson AM, will be joined by Brigadier Richard Smith CBE, Deputy.