https://www.socialeurope.eu/2017/07/road-soft-brexit/
https://infacts.org/brexit-britain-long-way-fall-touches-bottom/
https://www.fragomen.com/file/scottishfuturespdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmsctech/705/70503.htm#_idTextAnchor001