Thanks for the advice. I'm not altogether sure that they're going to seek proof that the contribution is going into a pension fund. The whole arrangement, based on what they've told me about it to date, seems a little loose. They mentioned that the 15% could, for example, be applied towards a health insurance policy, etc. at my discretion. In all likelihood, I'll apply the lot to a pension and start making a contribution from my salary next year as soon as the house deposit is sorted. I have to talk it over with a friend who works in this whole area and consider the options. Some useful info there on the USC liability, thanks again.