The UK Statistics Authority has released the latest national statistics for Land Use Change.

The release provides the first estimates for 2009 of changes on previously-developed land and the average density of new dwellings.

It shows that in 2008, on a provisional estimate:

2 per cent of dwellings were built within the Green Belt (unchanged since 2004) and 7 per cent of land changing to residential use (from any use) was within the Green Belt (an increase from 5 per cent in 2007).
9 per cent of dwellings were built within areas of high flood risk (unchanged since 2006) and 6 per cent of land changing to residential use was within areas of high flood risk (unchanged from 2007).
In 2009, on a provisional estimate:

80 per cent of dwellings (including conversions) were built on previously-developed land, unchanged from 2008.
New dwellings were built at an average density of 45 dwellings per hectare, compared to 43 dwellings per hectare in 2008.