https://cer.org.uk/sites/default/files/bulletin_114_js_st_article1.pdf
https://economy2030.resolutionfoundation.org/wp-content/uploads/2023/06/Trading-Up.pdf
https://ukandeu.ac.uk/wp-content/uploads/2024/03/UKICE-Brexit-and-the-State.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/761852/05_December-_EU_Exit_Attorney_General_s_legal_advice_to_Cabinet_on_the_Withdrawal_Agreement_and_the_Protocol_on_Ireland-Northern_Ireland.pdf