My sister and her husband are thinking of retiring to the North of Ireland - Derry. They say they can sell their house in Rathfarnham and buy a nice house in Derry, and still have a good bit of money left over. They have often visited Derry and have friends there. My sister who has had a few illnesses over the last few years is struck by the free healthcare in the North. They say they can both get their state pensions - they also have an occupational pension - in the North - is this true? Are their any pitfalls to their move. They've just announced it to myself and my other sister and their own children and grand-children.