https://www.conservativehome.com/parliament/2018/07/our-brexit-plan-takes-back-control-of-money-laws-and-borders-and-heres-how-may-and-raabs-letter-to-conservative-mps.html
http://www.independent.co.uk/news/uk/politics/article-127-brexit-stop-what-is-it-single-market-eu-eea-theresa-may-article-50-a7955806.html
https://www.opendemocracy.net/uk/brexitinc/james-cusick-adam-ramsay-crina-boros/revealed-tory-mps-using-taxpayers-cash-to-fund-sec?utm_source=Daily+Newsletter&utm_campaign=bd60eeeba0-DAILY_NEWSLET