No wonder Rees-Mogg is an ardent brexiter. If the UK is still in the EU after 2019, firms like his investment management vehicle with £9.6b under management which has dealings with companies with "tax haven status" will become subject to the new EU clampdown on tax avoidance
— will thorpe (@withorpe) February 6, 2018
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See also this post: https://angelinasouren.com/2018/01/31/the-illegality-of-british-government-actions/