Mike Tuffrey, the leader of the Liberal Democrat London Assembly Group, commenting on Ian Clement's resignation as Deputy Mayor for Government and External Relations said:
"Today another senior Mayoral adviser bites the dust. In just one year the number of senior advisers to the Mayor who have been sacked, or forced to resign, could make a five aside football team.
"Ian Clement's resignation was inevitable but three fundamental questions still need to be answered by the Mayor.
"Firstly, over a period of nine months Ian Clement repeatedly broke City Hall rules about personal spending. Why did Boris Johnson allow this to take place?
"Secondly, is Boris Johnson still allowing his senior staff to bill taxpayers for taking each other out to lunch and dinner?
"Third, will Boris Johnson now agree to publish the full expense details of all of his senior staff? Only this step will allow the public to judge what type of regime the Mayor is really running at City Hall."
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