http://www.fdf.org.uk/news.aspx?article=7834
https://dbei.gov.ie/en/Publications/Publication-files/Ireland-and-the-Impacts-of-Brexit.pdf
http://www.cbi.org.uk/index.cfm/_api/render/file/?method=inline&fileID=FC18E9C9-C854-4578-AE0D9A1C9367ABC6
https://publications.parliament.uk/pa/cm201719/cmselect/cmniaf/329/329.pdf