Notes to the Britain’s Biggest Housebuilders table Sources: <br> <br> The bulk of the data is taken from annual company reports. The data has been enhanced by information provided directly by companies or information provided to investors or other bodies on websites or in information provided to the City or financial press. Some estimates have been made where data was not available and reasonable estimates could be made – these are marked (e). <br> <br> General notes: Where practical and where adequate data are provided the figures presented are for the UK housebuilding operations only. However the figures for some firms listed may include elements of commercial property operations, construction or overseas activity. In the main the figures for the land refer to plots owned and controlled with planning permission. However firms do assess their land differently, so directly comparable figures are hard to come by. This year we have added an additional column for operating profit pre exceptional, given the large number of land writedowns and exceptional costs associated with restructuring. <br> <br> Barratt: The growth in turnover of Barratt in the year to June 2008 is related to the absorption of David Wilson Homes, which brought the capacity …