Can I thank to all for your help so far. My assistant Kev has been handling the correspondence for me up to know as I hadn't worked out how to log in until about half an hour ago! I was stung into action due to Kevs spiteful words.
Clutch out no problem thanks to your helpful tips spring replaced. Clutch plates reinstalled, not so easy but after a two or three attempts managed to line them up ok, or so I thought.
Something is sticking and the actuation rod isn't returning, so I'll be taking it apart again tomorrow to try to find why...