HMRC tax investigations return £34.70 for every £1 spent

HM Revenue & Customs (HMRC) secured an average £34.70 in additional tax for every £1 spent on investigations across its five key taxpayer directorates HM Revenue & Customs (HMRC) secured an average £34.70 in additional tax for every £1 spent on investigations across its five key taxpayer directorates last year, according to Pinsent Masons.