So I started checking out the shocks and although they’re not is really bad shape, they would certainly stand out from a pristine bodywork.  I gripped one end in the vice and zip tied the spring down enough to release the tension (not something I’d particularly recommend), it worked enough!

Having a dig around, however, I couldn’t find any key in the top of the upper mount to hold whilst I undid the cap, which meant it just keeps on turning. I have a suspicion that these are ‘sealed for life’ jobs which means there isn’t a lot I can do. To get the bike back on the road I will procure a new set of aftermarket ones and probably have these professionally restore, if I can do anything with them at all!