https://www.gov.uk/government/news/david-davis-concludes-visit-to-estonia
https://ukandeu.ac.uk/post-global-britain-a-new-normal-in-uk-foreign-policy/?mc_cid=a36ff76330&mc_eid=815b1928ec
https://theconversation.com/eu-citizens-proposal-a-lawyer-examines-the-detail-80111
http://www.automotivecouncil.co.uk/wp-content/uploads/sites/13/2017/06/Automotive-Council-UK-local-sourcing-content-research-2017-Final-1.pdf