The UK tax collector has paid out nearly £2 million to informants over the last four years, according to data obtained by Business Insider.

HM Revenue and Customs (HMRC) paid £421,460 for information about tax evasion in 2016/17, according to data released in a Freedom of Information request.

HMRC paid £460,433 in 2015/16, which compares to a spike of £605,000 in 2014/15, and to £402,000 in 2013/14.

HMRC declined to say how many informants the figures related to, stating disclosing this information could “prejudice the assessment or collection of any tax or duty or of any imposition of a similar nature,” and “endanger the safety of any individual.”