They lost Ireland years ago. If you mean Northern Ireland, there is little impetus there to change what people are seeing as peace. Factions on the far sides might want to play it that way but it's basically not going to happen. The south was/is in a financial crisis that was solved by the UK saying we'll bankroll them and their own austerity. Norway is not in the Euro but has accepted the schengen agreement for free travel. They do not pay so much in but they get more say on domestic rights.