https://institute.global/news/brexit-what-we-now-know
https://www.opendemocracy.net/uk/sunny-hundal/millionaire-is-planning-to-spend-around-700000-to-target-pro-remain-mps-at-election?utm_source=Daily+Ne
https://theconversation.com/eu-citizens-proposal-a-lawyer-examines-the-detail-80111
https://www.ifs.org.uk/uploads/publications/bns/BN243.pdf