Estimates of the take-up rate for child and working tax credits in 2004-05, for which latest figures are available, are published in table 1 of the HMRC publication ‘Child and Working Tax Credit Take-up rates 2004-05’. This publication is available on the HMRC website at:
Estimates of the numbers of families with tax credits awards are available in the HMRC publication ‘Child and Working Tax Credits. Finalised Annual Awards’, for the years 2003-04, 2004-05 and 2005-06. These publications and provisional estimates for the number of families with tax credit awards, as at selected dates in 2006-07 and 2007-08, are available on the HMRC website at:
We do not produce statistics separately for child tax credit and working tax credit.