https://www.gov.uk/guidance/status-of-eu-nationals-in-the-uk-what-you-need-to-know
https://publications.parliament.uk/pa/ld201719/ldselect/ldeucom/63/63.pdf
https://www.kcl.ac.uk/policy-institute/assets/uk-attitudes-to-immigration-1018742pub01-115.pdf
https://ukandeu.ac.uk/wp-content/uploads/2024/03/UKICE-Brexit-and-the-State.pdf