Boris Johnson said the "Olympo-sceptics" were proved wrong by success of the London 2012 Games after it was announced the Olympics gave the UK economy a £9.9 billion boost.
The Mayor of London said the country would now "defy the doom-mongers" when it comes to securing a permanent Olympic legacy.
"London is succeeding where virtually no other host city has, on track to secure a solid gold payback on the taxpayers' outlay and a rosy future for the Queen Elizabeth Olympic Park", Mr Johnson added.
More top news
A 14-year-old boy was tied up and threatened with a machete by burglars when he was home alone.
James McClellan, 53, is suing the firm claiming he was branded an 'old buffer' and forced out of his account manager job.
A family's desperate bid to stop a teacher joining Islamic State has been revealed in emotional recordings.