More than half of the capitals major A&Es failed to meet the Government's four-hour waiting time target.
Six London trusts missed the target at least 80 per cent of the time over the last year, while Barking, Havering and Redbridge University Hospitals Trust missed it every single week.
The London Assembly's Health Committee, which carried out the study, warns that waiting times could get worse this winter as demand for care increases.
More top news
After years of political manoeuvring over the future expansion of Heathrow Airport, there has been an important development this lunchtime.
Louise Gray spent £250,000 of her own compensation money before she 'betrayed' her son Adam and plundered his fund.
Rostam Notarki chased Charles Hickox out of the Cardinal Wolsey after the victim went to confront staff about a missing credit card.