Militant cabbies who vowed to blockade Trafalgar Square have boasted how their threats forced Sadiq Khan to give them everything they wanted. Last week the London mayor conceded almost every single one of the cabbies’ demands, as well as imposing punitive regulations on Uber. What might explain the timing? Well, the militant United Cabbies Group were threatening to bring London to a standstill this week unless Khan caved in. It would have looked pretty bad for the Mayor given he’s off making friends in America at the moment. The capitulation came and now United Cabbies Group have cancelled the blockade as “the Mayor brought forward his announcement because of the pressure of a demo”. London could have a Mayor who stands up to union intimidation, instead he gave in to blackmail so his photo op in the States wasn’t ruined…