Christopher Wylie, who has exposed the scandal of the Leave Campaign using Aggregate IQ to secretly manipulate the EU referendum points out that:-
"The official Vote Leave campaign led by Michael Gove and Boris Johnson spent 40% of its budget on AIQ. This is public record: invoices are published on the Electoral Commission’s website. Dominic Cummings said that “without a doubt, the Vote Leave campaign owes a great deal of its success to the work of AggregateIQ. We couldn’t have done it without them”.
"Vote Leave paid an additional £625,000 directly to AIQ on behalf of BeLeave. This was the largest single donation that Vote Leave made during the referendum. Donating to another campaign is perfectly legal – but only if the other campaign is actually separate. But if Vote Leave spent this sum of money in a coordinated way with BeLeave, it would have breached the legal spending limit."
"If this happened in Kenya or Nigeria, a new vote would be demanded by international observers. If this happened in a local constituency, a by-election would be called. Surely British democracy is mature enough to respond when something looks like it may have gone wrong, especially when the stakes are so high. The referendum was won by less than 2% of the vote. Could this have made the difference? Vote Leave’s chief strategist said it did: on a quote – now deleted – for AIQ’s website."
He goes on to say:-
"I am a progressive Eurosceptic. I supported Leave. This is not about “remoaning”. It’s about upholding the rule of law. The UK is about to embark on the most profound change to its constitutional settlement in a generation. We must be absolutely certain that this is being done on a proper legal basis. These are uncomfortable facts and hard questions. But Britain mustn’t “pull a Facebook”. Denial doesn’t work."
www.theguardian.com/uk-news/2018/apr/07/christopher-wylie-why-i-broke-the-facebook-data-story-and-what-should-happen-now