Living in the Republic 'won't rule people' out from vaccination in North

On the NHS website, where you can book a vaccination, it says that you will need to be registered with a GP. 

Republic of Ireland citizens who have lived in Northern Ireland can book a vaccine in Northern Ireland, subject to some eligibility criteria, without fear of penalty.

The Department of Health in Northern Ireland has confirmed that Irish citizens who book a vaccine in the North using an old NHS number from a previous period of residency will face no sanction should they be told they have failed to match the eligibility threshold.