Just a
FINAL update on this, my symptoms got worse ( knocking ) and this morning I finally removed the nearside front strut and replaced the top strut bearing and the rubber spring seat ( Volvo ) which were obviously tired and worn.
Not a bad job at all to do and seeing as I had a pair of new drop links I fitted these as well.
The car is as quiet as a lamb now so worth the effort.
The problem was definitely top mounts and not the drop link.
Thanks to all of those that offered advice. Much appreciated