SWINTONs are good!
I've not had to claim, but I found Swintons (who are the broker for NIG insurance - same as BMW), they quoted £209 for my R12GS (+£250 excess), it suprised me that to have £0 excess pushed the price to £224! This was £150 cheaper than next best quote (Carole Nash), £250 cheaper than Bennets and £500 cheaper than BMW's own.
I was pretty chuffed with this, as this was my first big bike (as passed my test and went from a CG125 to the beast). I also had to change from my estimated 5K miles to 12-16K, for £0!!!
Btw, i'm 39, and live in Hertfordshire and commute to London.
Was a bit dissapointed to see that this good value for only for the GS, the K1300S was a no-quote, the K1200S was £1700!!! Feck.