Havering has the highest quit rates in the capital with 69 per cent of smokers successful in their attempts to stop.
The latest figures have been released by the British Heart Foundation (BHF) as part of its No Smoking Day campaign.
Every week nearly a thousand hospital admissions in London are for diseases directly caused by smoking, according to the BHF.
No Smoking Day, which is in its 33rd year, is an annual national campaign that unites councils and health bodies across the country in the fight against smoking-related illnesses and deaths.
Dr Mike Knapton, BHF associate medical director, said: “Quitting smoking is the single best thing you can do to improve your heart health and we’re urging the capital’s smokers to use No Smoking Day to attempt to quit.
“Nearly half of those who plan a date to stop are successful, making No Smoking Day the perfect opportunity to quit the deadly habit for good.”
BHF says there is also a huge difference in the number of smokers per London borough.
Only one in 10 people light up in Richmond upon Thames compared to one in five in Barking and Dagenham.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here