1. State of the Economy, Scottish Government, January 2018.
9. Aberdeen and Grampian Chamber of Commerce, 29th Oil and Gas Survey.
13. Financial Times (7 January 2019) - Six-day queues into Dover feared under no-deal Brexit scenario
14. Export Statistics Scotland 2017
18. Office for National Statistics - Business demography
25. State of the Economy, Scottish Government, February 2019.