Ministers have been accused of suppressing a damning official report which found that the government's flagship programme to turn around the lives of 120,000 "troubled families" has had no "discernable" impact.

The report, which has handed to the Government last Autumn, concluded that there had been a "lack of obvious effect" on unemployment, truancy or criminality.

The troubled families programme was unveiled by David Cameron in August 2011 in the wake of the London riots in a bid to "put rocket boosters" under plans to turn around "neighbours from hell".