The CMOs office has confirmed that healthcare workers returning from holidays in countries that are not on the “exemption list” do require to isolate in line with the rest of the population.  Some useful links below

https://www.health-ni.gov.uk/news/new-advice-travellers-coming-northern-ireland

https://www.gov.uk/uk-border-control(external link opens in a new window / tab)

https://www.gov.uk/government/publications/coronavirus-covid-19-travellers-exempt-from-uk-border-rules