Richard230,
Thank you very much for taking the time to take some photos. Greatly appreciated. It does look like your mudguard arrangement is the same as mine i.e it finishes just after the swing arm pivot point rather than before it.
AzCal Retred,
Yes. A heatgun I think would be perfect to mould the mudguard so it fits inside the swing arm loop. A little trimming will likely be required as well. I may also look at extending the bottom mount so it provides some support to the bottom of the guard if that's at all do-able.
Now that winter's starting to bite it's the perfect garage project. I'll update this thread with the outcome, once I've finished some other work I'm doing to the bike (Power commander & other bits) Thank you both for your help and pointers :-)