We, well Gordon, has done that unfortunately did not work. he has also checked the sensor near to the sun roof in-case rain water had got into the bits, he has taken out fuse 21 or maybe it was 12 to hard set the immobiliser, still no luck. changed the batteries in the keyfob again no luck, checked the keys infra red light (using the camera) and that is working.
Thanks to you all for your suggestions and offers of help, it really is appreciated, PLEASE DON'T STOP!!!!:D