In reply to Nicola:
Hi Nicola - yes I have, and I can wholeheartedly endorse them. I've waxed lyrical about them before, so I've cut and paste from a previous post:
Upsides: Cheap, simple, all-inclusive (lift pass, equipment, tuition if desired, 3 meals a day plus afternoon cake, travel if you want to take a coach), excellent for socialising / meeting new people and - generally speaking - reasonably good accommodation.
Downside: Perhaps less suitable for older groups or families (they in fact have an upper age limit, I think it's around 40 but I've heard it's flexible), and the accommodation (whilst being, in my opinion, perfectly acceptable) isn't as nice as you might get elsewhere. Usually a case of 4 / 6 to a room, but a limited supply of double/twins at extra cost.
I personally have only been to the UCPA Val D'Isere (3 times), and thoroughly enjoyed going. From looking at pictures, the other ones look just as good.
I have been before on my own, and whilst it probably wasn't quite as much fun as with others, it was still good. It's a bit of a roll of the dice - hopefully you'll like the people you share a room / share a ski class with.
Anymore more questions, feel free to ask.
