In reply to SDM:
When we brought our house 4 1/2 years ago I took out insurance with Summit for my activities including MTB, kayaking and climbing (Trad and Ice). They asked about grades etc and were knowledgeable on what was involved in the activities. They quoted a rate I was happy with so I am insured through them.
Funny thing was the Bank quoted my partner more for her cover than I was quoted. We went back to Summit and asked them to cover her as well. She doesn't climb. Summit quoted cheaper for her as well.
My experience is of a good service, no aggressive aftersales and competitive costs.
HTH