Please help me get my freelander back on the road

Update /story so far
As mentioned my 2005 TD4 sport Freelander just cut out whilst driving, with no warning and now won't start.
Story so far is the car turns over healthily, immobiliser and Dash lights are all normal. When ignition turns on the dash lights illuminate as normal. Turns over strong and healthy but will not start.
Diagnostics reveal no problems or codes.

So we've checked the rear fuel pump that's ok, changed the filter and still no start.
We've checked the fuel sensor harness and replaced, still no start
Check the fuel rail pressure sensor and supplier fuel was present but not under pressure. So we've replaced with a new fuel pump regulator valve and she still will not start.
So the vehicle turns over normal with no start, rechecked pressure in fuel rail on turning of key and same symptoms as above, fuel present but not under pressure?? Is my fuel pump gone? Broken?
Before replacing it is there anything else I can check?
Thank you in advance
Please help me get my beloved freelander back

If you post your questions in the freelander sub-forum instead of "Introduce Yourself", you might get a quicker response. ;-)