Thanks for the reply, only just seen it. I have added another more detailed post since but no replies to that. I have fitted a new fuel filter but have not bled the system as on cranking with injector pipes disconnected, I did get fuel pulsing out of the pipes for all cylinders but not at very high pressure, I assume pressure builds with a closed circuit to open the injector nozzle.
The opcom shows only a minor fault with inlet airflow sensor but that should not stop the car from firing. I have used bradex with glowplugs disconnected but all I got from that was a flame backfire through the inlet pipe. Have turned the car over quite a few times using bradex but apart from me getting a bit high the car doesnt want to know!
Have taken off the cam cover and the pump access plate and checked TDC hoping I had got the v timing 180 out but no, all correct there so I am really head scratching now. I have fitted a new top chain but the bottom one has not been touched so I dont think there are any timing issues. I will look at the fuel supply again but as bradex wont fire the engine, I think I may be wasting my time.
Although I dont know if there is a oil volume/pressure sensor, have checked oil level which is ok and cant see that there is anything else on the engine which would prohibit starting.
Any other thoughts would be appreciated.