PM warns developers to stop sitting on land as housing plans unveiled

The Prime Minister is to rewrite planning rules by clamping down on developers who "just sit on land and watch its value rise" instead of building homes on it.Mrs May will stress she "cannot bring about the kind of society I want to see, unless we tackle one of the biggest barriers to social mobility we face today" - the lack of affordable housing.Mrs May will claim some developers are discouraged from constructing houses after getting planning permission due to a "perverse incentive" for bosses