"He is clearly shutting down scrutiny of the Met Police before the election, because he is embarrassed of his failures over the last seven and a half years.
"As Mayor I will embrace scrutiny, not run from it."
Responding, a spokesperson for the Mayor of London said: “Policing in our city needs to improve and change and the voices of Londoners – with a wide range of professional skills and lived experiences – must be at the heart of driving this reform.
“As a Board very much independent from the Met, it is expected they will have a variety of strong opinions and perspectives.
“As well as experts in front-line policing and law, the Board has strong representation from communities who have been let down by the police and have the lowest levels of trust in the Met – their contribution will be invaluable to driving the level of reform outlined in Baroness Casey’s review.
“The Mayor is pleased to be working with Board members and looks forward to the next meeting in December as work continues to publicly oversee and scrutinise the systematic and cultural reform of the police in our city as build a safer London for everyone.”