A government spending watchdog is to be asked to investigate controversial plans to build a garden bridge over the River Thames after further claims about the process to award contracts.
Labour MP Kate Hoey is asking the National Audit Office and the Commons' Public Accounts committee to examine the £175m project.
Critics of the tree-lined river crossing claim the tendering process was 'rigged' in favour of winning designer Thomas Heatherwick.
The president of the respected Royal Institute of British Architects yesterday called on Boris Johnson to put the bridge 'on hold.'
It emerged today Richard de Cani, a senior official at Transport for London involved in awarding the contract to project manager Arup, has now accepted a job with the firm.
Transport for London insisted the bidding process for contracts was fair and transparent.
Ms Hoey, MP for Vauxhall, said she would press for a Parliamentary debate on the bridge.