“The tax take for this group of people has fallen by £1 billion since HMRC set up its dedicated unit. At the same time, income tax paid by everyone else has risen by £23 billion.
http://www.mirror.co.uk/news/uk-news/fatcats-pay-1billion-less-tax-9700294
http://www.taxresearch.org.uk/Blog/2017/01/27/public-accounts-committee-says-hmrcs-lack-of-transparency-has-eroded-public-trust-in-a-fair-tax-system/
http://www.rossmartin.co.uk/sme-tax-news/809-mps-initiate-key-changes-in-hmrc
https://www.parliament.uk/business/committees/committees-a-z/commons-select/public-accounts-comm