Cheers for the information/advice guys, it's all appreciated!
Swivel, i have had a go at trying to get somewhere mechanically: firstly realised that the starter motor wasn't working due to worn down bushes, so bought some new ones and repaired that, then ran the battery dead making sure it was working well. So that went back on and the battery was charged. Then i tried turning the engine over, (first mechanically just to get things used to moving again after a few years of sitting gathering dust), then by the starter. All seemed pretty good, though i've got one (possibly major?) problem, the bike's stuck in gear.
I've tried to get it into neutral when the bike's just sitting, and it won't budge, and i've also tried shifting it when i've had the starter turning it (stuck to short bursts so i didn't damage the starter or run the battery down too much). When i fiddle with the clutch, not much seems to happen, i can't feel anything. So, any advice for me? Possible diagnosis, things to try to rectify it, etc...
Cheers in advance, Ben.