https://www.theguardian.com/politics/2017/sep/04/uk-trade-deals-after-brexit-theresa-may-eu
https://www.iod.com/Portals/0/PDFs/Campaigns%20and%20Reports/Europe%20and%20trade/Business-of-Brexit.pdf?ver=2017-05-22-090428-150
https://ukandeu.ac.uk/wp-content/uploads/2020/06/Mind-the-values-gap.pdf
http://blogactiv.eu/blog/2012/05/15/stumbling-towards-the-brexit/