The UK's tax body is reviewing its decisions to strip child benefit from about 23,500 claimants after it used travel data to conclude they had left the country permanently. Normally the benefit runs out after eight weeks living outside the UK, but many people affected complained that HM Revenue & Customs (HMRC) had stopped their money after they went on holiday for just a short time. The move came after MPs on the Treasury Select Committee demanded answers from the tax authority. HMRC has apologised for any errors and says anyone who thinks their benefits have been stopped incorrectly should contact them. In September, the government began a crackdown on child benefit fraud which it believes could save £350m over five years.