https://theconversation.com/why-the-eus-singapore-ruling-does-not-lead-to-a-smoother-brexit-road-for-britain-78116
https://blogs.lse.ac.uk/brexit/2020/03/09/brexit-is-a-policy-fiasco-were-voters-deceived-during-the-referendum/
https://publications.parliament.uk/pa/ld201719/ldselect/ldconst/69/69.pdf