2018: 1andrew1. If the UK leaves the Customs Union and Eire remains in it, you can't have a seamless border between Northern Ireland and Eire as well as between Northern Ireland and GB . Something has to give. The EU has offered a solution that NI remains in the Customs Union which effectively puts a border down the Irish Sea.
2018: Protagonist. Don't be so damn realistic, sorry pessimistic! There's some new untested unicorn technology being offered by the team behind the NHS National Programme for IT. It will be world-beating. You just need to believe more. Wait and see!
2019. Boris Johnson. No border in the Irish Sea as a result of my Brexit deal. Trust me.
https://www.bbc.co.uk/news/uk-northern-ireland-50430815
2020: Application for border posts at ports sent to EU
https://www.bbc.co.uk/news/uk-northe...m3=BBC+News+NI