Police informants paid more than £360,000 in five years http://www.liverpoolecho.co.uk/news/liverpool-news...

police informant subject to an income tax charge? https://www.taxation.co.uk/articles/2009/05/27/184...

Police forces pay £25million to informants and nearly half is spent by London’s Met http://www.dailymail.co.uk/news/article-2343764/Police-forces-pay-25million-informants-nearly-half-spent-London-s-Met.html#ixzz4SW1p0LtP

UK tax authorities pay record £605,000 to informants https://www.theguardian.com/politics/2015/jun/15/u...