Hi Nick,

Sorry to hear about the problems you're having! I'm a sparky by trade, so hopefully i'll be able to point you in the right direction, that is providing you haven't already sorted it!
You say your battery was fully charged, and there was no click on turning the key? This suggests the solenoid has gone. Although it could well be the ignition switch. An easy way to test this would be to get a test light, of some sort, obviously 12v.

Check for a permanent live feed on your solenoid input. If this is present, you know there's nothing wrong with the wiring!
Once you've checked this, do the same with your output terminal on the solenoid. Get someone to turn the key. This should light up once the key is turned. If not, you've got a blinked solenoid. If it does, but the starter doesn't turn, it's the starter motor.

Either way, it's just as cheap these days to have the starter and solenoid replaced as a full unit. Especially on a 10 year old motor.

- Hope this helps. Feel free to get back to me should you need further guidance!