https://www.gov.uk/government/news/programme-for-fourth-round-of-uk-eu-article-50-negotiations
https://infacts.org/theresa-mays-flip-flops-u-turns/
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/635900/2017-08-07_DP_Bill_-_Statement_of_Intent.pdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmcumeds/365/36503.htm