More than 200 buses are set to go green after part of Wandsworth was deemed one of the "worst polluted" areas in London.

Wandsworth Council welcomed the latest measure to tackle the capital's lethal toxic air as mayor of London Sadiq Khan announced a new 'clean air' low emission bus zone will run from Wandsworth to St John Hill.

“Pollution from vehicles including buses are responsible for over half the harmful emissions we breathe," Mr Khan said.

"Low emission bus zones are an effective way of dramatically reducing pollution and improving the health of thousands of Londoners who live or work along the worst air quality hotspots."

Two years ago the 85 bus through Putney High Street underwent the same change.

Mr Khan said the "success" of this initial route helped pave the way for this rollout.

"The results in Putney and Brixton speak for themselves, which is why I am committing to delivering all 12 routes ahead of schedule in 2019 rather than 2020," he said.

Wandsworth Council’s campaign to have cleaner buses operate in Putney was shaped by its own 2012 research project which concluded they were the primary sources of nitrogen dioxide in the high street.

Cllr Jonathan Cook added: "This is good news for people in Battersea who will now see similar improvements in the quality of the air they breathe as has been achieved for people in Putney.

“It was our landmark study and intense lobbying of city hall that lead to a low emissions bus zone being introduced in Putney High Street in early 2017 and since then it has seen the biggest fall in pollution levels in London thanks to investment in its bus fleet, so we are pleased the Mayor and TfL have learned these lessons and formally introducing a similar zone between St John’s Hill and Vauxhall.

“We will continue to lobby the Mayor and TfL to ensure all of Wandsworth’s bus routes use low-emission buses – not just those in pollution hotspots. All our residents deserve cleaner air and focusing on buses is a big step forward.”