Got it running again with an adapted gas stove igniter as an electronic ignition system. Incredibly easy fix, lower voltage system, but starts right away. I have not even replaced some of the bits advised by Jan Ridders, the originator of the idea. The 400v capacitor I still require is expected in tomorrow's post.
Quite pleased with this and the total cost of the gas stove lighter was £7 and a few pennies for a capacitor and an extra resistor is all I actually needed. The spark is triggered by the reed switch which came with the unit - the little black box down by the fly wheel.

I can't figure out how to upload a video so I can't show you how well it works. Sorry.