
https://blogs.lse.ac.uk/brexit/2021/01/11/article-16-of-the-ireland-northern-ireland-protocol-offers-no-quick-fix/

https://www.cbi.org.uk/media/4112/the-red-tape-challenge-final.pdf

https://publications.parliament.uk/pa/cm201719/cmselect/cmintrade/520/520.pdf