https://socialeurope.eu/brexit-why-does-northern-ireland-matter-so-much
https://www.rte.ie/news/analysis-and-comment/2017/1117/920981-long-read-brexit/?utm_source=POLITICO.EU&utm_campaign=693f844ad1-EMAIL_CAMPAIGN_2017_11_20&utm_medium=email&utm_term=0_10959edeb5-693f844ad1-189647205
https://ec.europa.eu/commission/sites/beta-political/files/use-data-protection-information_en.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/723460/CHEQUERS_STATEMENT_-_FINAL.PDF