
https://uk.yahoo.com/news/brexit-still-wont-happen-says-legal-expert-claimed-article-50-never-triggered-104433721.html

https://www.un.org/esa/population/publications/migration/migration.htm

https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/974507/20210331_-_CRED_Report_-_FINAL_-_Web_Accessible.pdf