I'm in a similar position, I have a minor non fault claim that is going on with a third party and Sky have stung me with an extra £250 for 'an ongoing claim' - despite 10 years protected no claims, with them!! Got you over a barrel too, who is going to quote a new policy fairly with an ongoing claim?
Its been going on for 7 months now and still not resolved, I'll be posting my experience on here once I've had their comments. When it comes to renewal next year I will be looking to avoid a broker if possible as its been a farce from the start
+1 for reviewing the club insurer. Sky have distanced themselves from the club somewhat, apart from today their last activity on here was November (for a competition), and June before that.