A West MP has called on the government to investigate claims that unpaid stewards from Bristol were told to sleep rough before working long shifts at the Jubilee celebrations.
Volunteers on the government's Work Programme were taken to London to help control crowds at Sunday's pageant on the Thames. But some have complained that they were told to sleep under a bridge before the 16-hour stint.
A security company has apologised.
Bristol West MP Stephen Williams has written to the work and pensions secretary to complain.