The English Indices of Deprivation have, since 2004, been produced at Lower Level Super Output Area (LSOA). These are smaller than wards and are designed to remain consistent in size, and over time, to allow more detailed identification of pockets of deprivation. This also overcomes difficulties in producing statistics for electoral wards associated with frequent boundary changes. There are 32,482 LSOAs in England with an average population of 1,500 people.
I have placed a table of the 10 per cent. most deprived LSOAs from the English Indices of Deprivation 2007 in the Libraries of the House.
The Wales, Scotland and Northern Ireland administrations produce separate deprivation indices.