Information on the number of in-work families in receipt of tax credits who estimated that their income had increased by more than £25,000 in 2006-07 is available in table 6.1 of the snapshot publication “Child and Working Tax Credit Statistics—April 2007”. This is available on the HMRC website at:
http://www.hmrc.gov.uk/stats/personal-tax-credits/ctc-wtc-snapshot-apr07.pdf.
HM Revenue and Customs do not routinely collect data on time taken to dispatch award notices. However, HM Revenue and Customs aim to process 86 per cent. of changes of circumstances within five working days and 95 per cent. in 30 working days and the Department is achieving that aim.