Hey Guys thanks for the Help. Before i pulled apart the ECU and there was water in it so dried it out with a hairdryer and then plugged it back in. Car started first time after this. There obviously had been a significant amount of water in here as some corrosion on the bottom plate had occurred. Luckily the ECU is still going. I will be leaving the ECU to completely dry out in front of the fire tonight, then will now have a working car again!!