https://www.kcl.ac.uk/policy-institute/assets/uk-attitudes-to-immigration-1018742pub01-115.pdf
https://ukandeu.ac.uk/trade-migration-and-brexit/
https://www.clingendael.org/sites/default/files/2022-08/long-term-protection-in-europe-needed-for-millions-of-ukrainian-refugees-.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1036046/An_Inspection_of_UK_Visas_and_Immigration_Front_End_Services__August_2020_to_June_2021.pdf