Mayor Boris Johnson s decision to scrap plans to charge gas-guzzling vehicles £25 for entering the congestion charge zone lets the biggest polluters off the hook and raises concerns about the new Mayor s green credentials, Friends of the Earth said today.

Mayor Boris Johnson's decision to scrap plans to charge gas-guzzling vehicles £25 for entering the congestion charge zone lets the biggest polluters off the hook and raises concerns about the new Mayor's green credentials, Friends of the Earth said today.

Friends of the Earth's London Campaigner Jenny Bates said:

"Boris Johnson is letting the biggest polluters off the hook instead of encouraging people to use cleaner cars. He should now reopen the consultation on gas guzzlers as he has done with the western extension of the congestion charge zone.

"The Mayor has committed himself to a 60 per cent reduction target in the capital's carbon dioxide emissions by 2025. He must now put forward credible plans to tackle traffic across London and cut climate change emissions from transport.

"In the next few months Boris Johnson and the Conservative Party must show they are serious about tackling climate change.