Dennis Ferranti
Savoia.
I have just seen your post dated 18th July 2010.
I believe that Dennis Ferrantis's Hughes 500 was actually a 500M and was flown from the right hand seat. I think that Dennis had an eye problem. It had two mesh seats in the font - just like the OH-6A.
He also had an HS 125 and a Brantley, or two, before the Hughes 500.
In those days, Battersea was run by "Jonny" Johnson (I believe RIP) and Dave Ward. Dave was responsible for running the Silverstone heliport during the British Grand Prix - in the busy years!