OK Guys another question, I have messed about some more with the car and 2 things have came to light, First of all there seems to be air in the water system and I have spent hours trying to get the air out, ive tried the old 2L water bottle in the expansion bottle trick to create a high point higher that the engine but there still seems to be air in the system I am running it untill its at working temperature but no joy and its had a new thermostat so definatly not that either.

Issue number 2, The cooling fan is not kicking in. As we discussed above I am aware this could be an ECU fault but can anyone advise of any lines I can investigate before i diagnose an ECU Fault

As I said Im not a mechanic but worked with cars all my life so I do have a pretty decent basic knowledge if that makes sense.