https://publications.parliament.uk/pa/ld201719/ldselect/ldeucom/63/63.pdf
https://www.tandfonline.com/doi/epdf/10.1080/01402382.2023.2168945?needAccess=true&role=button
https://www.gov.uk/government/news/pms-open-letter-to-eu-citizens-in-the-uk
https://ukandeu.ac.uk/wp-content/uploads/2020/05/UKICE-Post-Brexit-Gov-NI-Report.pdf