London mayor says city has been forced to ‘pay twice’ for extensive delays

Choice of ex-auditor KPMG to look into £16bn project questioned by former minister

Departure comes amid reports government was preparing to sack him

London mayor accused of misleading public over delays and cost overruns

Loan is aimed at stopping east-west London rail project falling further behind schedule

Former board member of London’s transport body warned safety targets are unlikely to be met

Party aims for moderate who can strike a different tone with electorate

The borough has approved just 31% of new developments

Sadiq Khan funds unit to echo Glasgow approach of treating assaults as public health issue

Environment secretary tries to forestall rebellion as Khan calls for second referendum

Senior Tory says Downing Street braced for embarrassment if he enters contest

Campaigners accuse Transport for London of complacency

Sadiq Khan concedes annual rate of building needs to rise by 70 per cent

Government intends to ban sale of most-polluting fuels to tackle air quality

Calibre of contenders suggests party’s lack of confidence in battle

Khan wants to follow New York in restricting number of cars using apps such as Uber

Fears ignoring recommendations on new runway’s impact could imperil development

Profits from build-to-rent schemes help offset shortfalls in transport revenues

London mayor restricts Westminster council funding after it drops pedestrianisation

London mayor says May being held hostage by handful of rightwingers

Majority of 296 for third runway is welcomed by business and deplored by locals

Hillingdon will ‘spend whatever it takes’ if parliament gives go-ahead in Monday’s vote