I refer the hon. Member to the answer given to the hon. Member for Shrewsbury and Atcham (Daniel Kawczynski) on 14 January 2008, Official Report, column 861W.
DEFRA monitors the performance of Warm Front as part of an ongoing monthly reporting cycle.
DEFRA also employs independent quality assessors, who provide in-depth analysis of the performance of Warm Front contractors, both as part of a regular audit cycle, and on an individual project basis where required.