
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/677268/Letter_to_Business_Leaders__1_.pdf

https://exchange.cim.co.uk/editorial/is-brexit-marketers-biggest-challenge-no-the-apocalypse-is-coming/

https://www.global-counsel.co.uk/sites/default/files/special-reports/downloads/Global%20Counsel_Impact_of_Brexit.pdf