In reply to ncpainting:
I would take a flight to Scotland unless you like climbing in the rain!
I don't believe there is anything anywhere near in condition in Snowdonia at the moment.
If you do come up from London in the future and you are not driving, the train from Euston goes up to Llandudno Junction, you can then get the train from there to Betws Y Coed, where you would probably stay (or somewhere near) and get a taxi or a bus to the main areas of Snowdonia and other accomodation.
Plas Y Brenin may hire kit 01690 720214 is the stores number.