https://blogs.sussex.ac.uk/uktpo/2018/12/17/organising-the-second-referendum/
https://ukandeu.ac.uk/explainers/the-protocol-on-ireland-northern-ireland/?mc_cid=2bd4dc8e93&mc_eid=815b1928ec
https://www.ft.com/content/b638551a-68c3-11e7-8526-7b38dcaef614
https://economy2030.resolutionfoundation.org/wp-content/uploads/2023/06/Trading-Up.pdf