https://www.cipd.co.uk/knowledge/work/trends/labour-market-outlook
https://www.adamsmith.org/adam-smith-lecture/
https://theconversation.com/fact-check-does-immigration-have-an-impact-on-wages-or-employment-83666
http://www.britishchambers.org.uk/Workforce%20Survey%202017%20-%20Skills%20shortages.pdf