https://www.vdma.org/v2viewer/-/v2article/render/21059151
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/836116/Explanatory_Note_Accessible.pdf
http://www.wsta.co.uk/images/Brexit/Brexit_FINAL.pdf
https://www.gov.uk/government/news/joint-article-a-deep-and-special-partnership