https://www.wto.org/english/res_e/booksp_e/wtr23_e/wtr23_e.pdf
https://www.cbi.org.uk/media/4112/the-red-tape-challenge-final.pdf
https://www.theguardian.com/politics/2017/sep/04/uk-trade-deals-after-brexit-theresa-may-eu
https://publications.parliament.uk/pa/cm201719/cmselect/cmpubacc/401/401.pdf