A Conservative MP leading the rebellion against the coalition's planning reforms, which will be voted on tonight, has called the proposed changes a "recipe for community disharmony."
Zac Goldsmith said easing rules on home extensions was an "odd" policy which undermined democracy.
He told the BBC Radio 4 Today programme: "It will guarantee disputes between neighbours, I don't think anyone doubts that. It will be very unpopular and there is no evidence, as far as I can see, that it is going to solve any problems at all.
"It seems like very bad, clumsy politics."
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A milder night ahead with patchy rain in the south giving a soggy and slow start to Saturday in places.