http://www.independent.co.uk/news/uk/politics/brexit-workers-rights-european-court-of-justice-ruling-conley-king-ecj-gig-economy-eu-a8082801.html
https://publications.parliament.uk/pa/cm201719/cmselect/cmbeis/379/379.pdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmhaff/421/421.pdf