GrumpyGel you rule!!!
thank you very much for taking the time to take the pictures,
I couldn't find my way round the back of the engine to find the 2 bolts that hold it to what looks like the coolant rail in picture 4454.
tomorrow I have the day-off from work so going to try and get the remains of old one out, would it be ok if I make a heat-shield out of metal plate by myself instead of replacing it with a "genuine part"?