Salena,
After having a consulation and the treatment can vary as it will be when there are appointments available. They say that they only do surgery 3 days a month. So if you are having you consultation in April, then you are looking at May for treatment if they are spaces, if not it could be June etc.
The average costs are £695 each eye for your type of prescription, but that is for normal LASIK, not wavefront as that is a lot more, not sure on the price.
I have recently had my treatment at Southampton (1 week ago), can't fault the surgery or the Surgeon who was excellent and very reassuring, but the staff you first meet don't always put on a good customer focus.be prepared for delays as they are always running late for appointment times. Apart from that it's ok there.
Hope this helps..