Boris Johnson's long-awaited cycle hire scheme has been delayed due to dozens of bike "docking stations" being refused planning permission.
The scheme was meant to begin in May but has been pushed back after 75 of the 498 applications were blocked by individual councils.
It will now open next month but the Mayor admits that some stations will still not be completed before the launch.
Writing in response to a question from Labour Assembly Member Val Shawcross, the Mayor said that it was not clear exactly how many would be completed:
"A number of aspects that impact site delivery are outside of TfL’s control. It is therefore not possible to guarantee exact numbers at this stage, but I expect this to be as close to 400 docking stations as possible."
Boris said that only a "small minority" of stations had been refused and that TfL were working with the nine boroughs affected to meet their concerns.
Val Shawcross has called on the Mayor to release a full list of those stations refused permission.