There is cooperation between the UK and Ireland on health, including mutual recognition of qualifications. The Northern Irish subsidiary of the British Medical Association has warned that a hard border “could endanger patient care.”  The CEO of Cooperation and Working Together, a body that organises cross-border health cooperation, has proposed using the Norwegian model.  Along the Norway-Sweden border and other northern borders, there is some cooperation in the collection of ambulances and helicopters, as well as for maternity units for children and a few others, but for the rest, health care is separate. In 1922, the Free State of Ireland formally separated from the United Kingdom as an autonomous regime, in accordance with the Anglo-Irish Treaty, and was the conditions for full national independence, while Northern Ireland remained a member of the United Kingdom. As a result, the demarcation line between these two parts of the island has become an international border. Cross-border trade in goods and services has been subject to different tax and customs regimes and customs infrastructure has been put in place at designated border crossing points. All traffic was controlled by the jurisdiction in which it entered. This could result in a full search of the vehicle, with delays and inconveniences resulting. However, passport controls have not been enforced, with the Republic of Ireland and Northern Ireland part of the common travel area. In a February 2019 Sky Data poll, 79% of respondents voted in favour of a legal guarantee from the Irish government that there will be no hard border, even if it risks a Brexit without a deal on 29 March. In the same poll, 81% of respondents supported a reduction in economic relations with the UK if they were forced to choose and 19% supported a reduction in relations with the EU in favour of the UK in favour of maintaining open borders.  After Brexit, the border between Northern Ireland and the Republic of Ireland would become the only land border between the United Kingdom and the European Union.
If there were not enough trade agreements between the UK and the EU, it would probably mean controls on the goods that cross it. US Senator George Mitchell, who led the belfast agreement negotiations, said he believed the creation of a border control system between the Republic of Ireland and Northern Ireland could jeopardise the deal.  Surveys published on 18 February 2019 by Irish Senator Mark Daly and two UNESCO Presidents indicated that the reintroduction of a hard border would lead to the return of violence.     Policy Exchange describes itself as the “first think tank in the United Kingdom”. She has published a series of articles on the Irish border issue, written by former Irish Ambassador Ray Bassett (Senior Fellow on EU Affairs) and Graham Gudgin (Chief Economic Adviser). I just linked some of his articles. For more information, click on the name links. 9 All this explains why a purely commercial and strictly technical/technological solution to the problem of Irish border and migration controls after Brexit – and British Eurosceptic conservative circles, The European Research Group, supported by experts such as Shanker Singham, It is extremely imaginative in this regard7 – not only is it insufficient, but it is not politically relevant, as it does not address the total complexity and multidimensionality of the soft border system currently in place.8 The UK`s withdrawal from the EU necessarily means transforming the Irish border into a European external border: as such, it necessarily means going back to both the socio-economic and institutional provisions of the GMA.