http://fedtrust.co.uk/views-from-the-federal-trust/free-movement-and-migration/
https://yougov.co.uk/news/2017/04/26/voting-intention-conservatives-45-labour-29-25-26-/
http://cer.eu/in-the-press/speech-michel-barnier-future-eu-conference
http://www.automotivecouncil.co.uk/wp-content/uploads/sites/13/2017/06/Automotive-Council-UK-local-sourcing-content-research-2017-Final-1.pdf