The average number of families in each constituency benefiting from the child care element of Working Tax Credit in 2004-05 are available in the HMRC statistical publication "Child and Working Tax Credit Statistics. Finalised Awards 2004-05. Geographical analyses", which is available on the HMRC website at:
Estimates for 2005-06 will be published in May 2007.
No estimates are available for 2003-04, as the only data available are for a sample of cases. Any estimates would be unreliable at constituency level.