https://blogs.sussex.ac.uk/uktpo/2017/06/12/disentangling-brexit-trade-politics-and-policies/
https://corporateeurope.org/en/2020/02/toxic-residues-through-back-door
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/725288/The_future_relationship_between_the_United_Kingdom_and_the_European_Union.pdf
https://www.politico.eu/article/time-for-brexit-reckoning-uk-eu-relationship/