Does a Document Link Show Coordination Between Mercer Family and Brexit?

If so, such collusion is unlawful in the United Kingdom

The Guardian and other outlets have drawn a connexion between the Brexit campaign, Cambridge Analytica, Nigel Farage, and the recent US Election (calling the Brexit campaign the test bed for the US 2016 election). The Guardian goes into a detailed analysis of the financial connexions between the Mercer family and …