Please play nicely. No one wants to listen/read a keyboard warriors rants....
Very nice front spoiler , where did you get it from ?
Ok, try swapping the central locking ecu, then from inside the car with the doors shut, try the drivers door lock button. If this works then it confirms the ecu is faulty. I don't know if the remotes will work with a different ecu, but it would mean that you could then at least lock/unlock the car with the key.
This won't affect the immobiliser as that is an engine ecu circuit. If it does work, then it might be as simple as swapping the remote fobs with ones from the spare car
Do you have access to another Omega
Have you changed the battery in the fob?
I was referring to 'my naff code reader'
I took the CL ecu out again and found that if I shake it there seems to be something moving and rattling, took the case apart but theres nothing loose, probably component internally broken? Guess I have to get a new ecu and fobs for central locking... Took the wire looms plugs out from front door to check that is there any broken wires shorting but cant still connect to CL ecu. Anything else I could do? 
Firstly DO NOT USE THAT ANYWHERE NEAR ANY ECUs... It will potentially programme you out of using your car ever again.
Secondly, have you checked the bulbs?
