OK, after put up with random rear end knocking noises from my 2.0TS Spider and building up the confidence to tackle the suspension - thanks to the great info posted here on this forum, I went ahead and started last week.
I replaced the two original shocks with KYB 553205. Old ones looked ok with no leaks.
Replaced all the swing arm/dog leg bushes on both sides, total of six bushes. I purchased the bushes (red ones) from Strongflex which are made in Poland. A lot,lot cheaper than Powerflex, quick delivery and very good quality. http://www.strongflex.eu/en/
Special mention here to the guys at SGT Taplow who were very happy to press out the old bushes for me and press in the new ones for beer money a side.
Put all back together with no issues, went for a road test and silence ! no knocking, smooth ride less jittery than before. All in all very pleased. All the bushes cost me £52 delivered and the shocks £82 pounds delivered.
Unfortunately don't seem able to upload photos from my iphone