Estimates of the average number of recipient families and their entitlements to tax credits, by local authority and parliamentary constituency, for 2007-08, are available in the HM Revenue and Customs (HMRC) publications ‘Child and Working Tax Credits Statistics Finalised Annual Awards. Geographical Analyses’, available at:
http://www.hmrc.gov.uk/stats/personal-tax-credits/cwtc-geog-stats.htm
The same information for 2008-09 is not yet available as awards have not yet been finalised. However, estimates of the number of recipient families with tax credits, based on provisional awards, as at 1 December 2009, are available in the HMRC snapshot publication “Child and Working Tax Credits Statistics. Geographical analyses. December 2009”, available at the same internet address.
HMRC do not produce these statistics separately for child tax credit and working tax credit.