Talking of Ken’s positive campaign, Tessa Jowell is on the attack and is playing the race card against Boris in a piece for Progress:

“Can you think of a single thing Johnson has done in his time in office apart from the new Routemasters and ‘Boris bikes’? And his buses are so expensive that two of them would pay for Ken’s entire childcare package, and bikes, which are mainly used by white men on salaries over £75,000, are hardly stories of fairness.”

Presumably, in light of his desire to raise the tone, Ken is going to distance himself from his campaign chairman’s comments?