https://www.tuc.org.uk/sites/default/files/Brexit%20Legal%20Opinion.pdf
https://static1.squarespace.com/static/5adfc952ec4eb743393ebbbd/t/6075a1b4d148dc7bf6173c0f/1618321870456/ForesightGuide2021-JustLabs-Links_compressed+%2814MB%29.pdf
https://www.boeckler.de/pdf/v_2018_04_26_27_arg_co_determ.pdf