No I've been holding it slightly away from the block so it should jump.
I put a 12v bulb in series with the negative terminal to check for a short, and it did light up. Removed all fuses but bulb remained lit so
traced the cables back all the way to the fuse board and beyond. After a while of tracing cables and hacking at the loom all things seemed to be pointing to the ignition switch. Put a tester on the terminals and there was a short across the switch.
The previous owner did mention the radio was draining the battery when the ignition was off, which is one of the symptoms of a faulty ignition switch.
Hopefully replacing it this week so should see how we get on!
'88 Scirocco GT
'07 Golf GTI