S adiq Khan told a global summit on Wednesday that the “silent majority” of Londoners support his plan to expand the Ultra low emission zone (Ulez). Billionaire philanthropist and former New York mayor Michael Bloomberg meanwhile signalled his own support for the proposal, telling an audience of international officials that his foundation supported Mr Khan’s “innovative work” on air pollution. Mr Khan and Mr Bloomberg were speaking at the inaugural Partnership for Healthy Cities Summit, hosted on Wednesday at the St Pancras Renaissance Hotel. The event celebrated the recent achievements of five global cities in preventing noncommunicable diseases (NCDs) and...