https://publications.parliament.uk/pa/ld201719/ldselect/ldconst/69/69.pdf
https://infacts.org/theresa-mays-flip-flops-u-turns/
https://www.smmt.co.uk/wp-content/uploads/sites/2/1207-SMMT-position-on-UK-Brexit-negotiations.pdf
https://ec.europa.eu/commission/sites/beta-political/files/aviation.pdf