Originally Posted by
paul2
Irish (Rep of)Immigration will be cleared at Dublin airport and there is freedom of movement for anyone throughout the island of Ireland after that. There is no complication whatsoever.
Now, I'm not saying you're wrong, I'm just saying that this is very counter-intuitive.
Northern Island is part of UK sovereign territory and subject to British immigration controls (i.e., if you fly from outside of the British Isles to Belfast directly, you go through British immigration when entering). The ROI has a different set of immigration controls. Doesn't that preclude free movement throughout the entire island?
Ultimately, you can cross over the border from one sovereign nation's territory to another's, but that doesn't mean you're there legally.