In 2018, the BBC dropped the ball in covering three of the biggest news stories of the year, inextricably linked with the future of this country: the Cambridge Analytica scandal, the stealing of millions of people’s data and then its manipulation during the Brexit referendum; campaign group Vote Leave’s over-spending in the run-up to the vote; and the questionable finances of Arron Banks, the donor who bankrolled the unofficial campaign to leave the EU, Leave.EU.