Thread bump...
I've just renewed with [url="http://www.newmooninsurance.com/Musical/"]New Moon insurance[/url], having been with them for the last couple of years. I spoke to a very pleasant man in an office in Tunbridge Wells, who told me the premium is the same as last year. Which is nice, especially as it's on the right side of £100 for quite a few grand's worth of gear.
Of course the proof is in the pudding, and (touch wood) I haven't had cause to claim yet, but nothing I've read anywhere gives me anything other than confidence in them.
Definitely worth a look.