Information on the number of families with tax credits awards, including information on overpayments at UK level can be found in the HM Revenue and Customs (HMRC) publications, “Child and Working Tax Credits Statistics. Finalised Annual Awards. Supplement on Payments”, for the years 2003-04 to 2007-08 available at:
www.hmrc.gov.uk/stats/personal-tax-credits/cwtc-quarterly-stats.htm
Similar Information at country, regional, local authority and constituency level, can be found in the HMRC publications, “Child and Working Tax Credits Statistics; Finalised Annual Awards; Supplement on Payments and Geographical Analysis” for the years 2003-04 to 2006-07 at:
www.hmrc.gov.uk/stats/personal-tax-credits/cwtc-geog-stats.htm
Geographical information for 2007-08 is not yet available.
More details can be found at:
www.hmrc.gov.uk/stats/tc-delav-07-08.htm