https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/665871/December_-_Joint_technical_note_on_the_comparison_of_EU-UK_positions_on_citizens__rights.pdf
https://unherd.com/2021/12/what-hope-for-the-united-kingdom/
http://www.conservativegroupforeurope.org.uk/wordpress/wp-content/uploads/2017/09/Keeping-the-bridges-open-a-CGE-Policy-Options-Paper-.pdf