Brian Coleman, Conservative candidate for the Greater London Authority, has romped to victory at the London elections by a margin of more than 11,000 votes in another disappointing result for Labour.

Four years ago, the Tory councillor won the Barnet and Camden GLA seat by the tightest of margins in London, but this time scored a convincing victory over Labour's Lucy Anderson by 47,640 votes to 36,121. As the result was announced at Alexandra Palace on Friday, Mr Coleman claimed the result was a ringing endorsement of his work, despite Mayor of London Ken Livingstone's personal campaign to discredit him, particularly over Barnet Council's controversial policy of removing road humps.

"The Conservative party won this election on traffic, transport and stopping development on the Green Belt. I won because we ran a campaign across two boroughs. The vote is firmly with common sense," he said.

The Liberal Democrat candidate Jonathan Simpson was pleased with the 23,603 votes he received, announcing that he believed his party would continue to take votes off the Conservatives and Labour across the country.

But Ms Anderson appeared agitated and angry as she stepped up to address supporters, blaming the defeat on national issues, and claiming this was the lowest point for the London Labour party.

"We had a good campaign. But we have got stuck with what has happened nationally. People have to realise he Mr Coleman does not represent Barnet and Camden, but I am just glad that it looks like we will have a Labour Mayor," she said.

The turnout was 36 per cent, up one-and-a-half per cent on last time. A small decline in the Green vote to 11,921 was blamed on a swing to the hard-left Respect party. But they still came well ahead of the UK Independence Party and the Respect Coalition which polled a healthy 8,685 and 5,150 respectively, despite entering the election as fringe parties. The Christian People's Alliance received 1,914 votes.