In reply to Evilllamas: There are some truly great rivers in the lake district. I white water kayak a lot more than I climb, and I'm in the lakes/north wales most weekends, when there's rain.
I would urge you to find a club or other people who paddle so you can try on gear and find what niche of the sport you fancy, before you part with any cash. The majority of stuff for <£200, unless its been broken, is rubbish, with the exception of some classics like the inazone.
Also, I'm sure you already know this, but please don't paddle alone, esspecially on anything thats not a flat lake. To the untrained eye what appears to be a small, beningn weir can in fact be deadly (eg.
http://www.uniyaker.co.uk/to_link_to/evil_weir1.jpg )