Sorry to hear this Hovis. Glad you're not injured and bike is relatively ok.
As for the insurance, be prepared to fight. I had an off September last year, car did same thing only it took me right out causing ?2'500 worth of damage to bike and giving me concussion and sore back. Driver said "sorry" at scene but insurers then tried to pin blame on me. I was doing 10-15mph without any solids anywhere but still I have no cheque and am having to put it down as a fault (for now).
Filtering accidents very rarely go 100% either way apparently. Good luck with your claim though, hope it goes smoothly.