London's troubled Garden Bridge was today dealt a new blow by an official report questioning the project's viability.
The Garden Bridge Trust annual accounts also warn the scheme could 'substantially exceed' the £185m estimated cost.
The Trust blames a series of delays including 'a new Mayor of London'. The accounts reveal fundraising concerns and a 'worst case scenario' where the bridge is not viable.
The 366m tree-lined pedestrian bridge would link London's South Bank with Temple Underground station.
The charity behind the scheme is struggling to raise a shortfall of £55m despite a promise of £60m of public money in grants and loans.
London mayor Sadiq Khan has refused to hand over any further cash while he conducts his own audit of the project.
But the chairman of the trust insisted significant progress had been made and construction work was expected to begin later this year.
A spokesperson for the Mayor of London said: