Thanks for a quick reply.
I do know about the clip on the shock , and I have had then checked. The clip has been set at the lowest point. There are about 8 grooves in the unit if I remember correctly.
Still want to try to get a new set though. Could you tell if this link on besttpartstore.co.uk is referring to the correct shock.
Or could you suggest a site that I could look at for the correct part.