Forgot to say - today it has had a new injector rail fitted, along with new injectors all round.
The safety cutout is fine, and ive even tried bypassing it.
Ive had all the fuel lines in bits, and checked every last inch. All seems ok. It has good fuel pressure, and a nice consistent flow.
Im now starting to think it maybe spark related, as it is getting the fuel, but not igniting it. Im unsure, ive got a mechanic on it who is out ofideas too! Im trying to do it all myself, as on a tight budget at the moment.