After a phone call to Terry, thank you for your time, much appreciated;
I bought and fitted a "suction control valve", basically the fuel pressure regulator solenoid, it always amazes me how manufacturers keep inventing different names for the same thing.
I managed to find the part number on the pump and read it with a torch and a mirror! after that getting the SCV was not a problem and find they are easily available on ebay.
I made a mistake by not "googling" the problem as after taking the long way round to the answer I find its a common problem well documented on 'tinternet. Normally if I can't see the answer straight away its what I usually do...oh well.
Anyway a new SCV and the car was fine after.
Thank you both for your replies
Shaun.