Optical Express advertise LASIK from £595 per eye, and they do 0% finance I think. I've had it done, well over 10 years ago now, and i wholely recommend it. I know some would say £595 is cheap and you shouldn't go for the cheapest option when it's your sight, but they can do it for that as they have economies of scale. Plus I would rather have it done by a surgeon who does it all day every day like these guys too as they are so experienced!