Major update!! Good friend of mine runs Spilsby garage in Spilsby, Lincolnshire. was doing routine service for me and couldnt reset the service light as the bonnet open warning message was displayed. Had a look at it and would you believe, Landrover/Jaguar in boston hadnt fitted the new bonnet catch/sensor properly! I ask you, main dealer!.. The male plug from the loom had not been fitted right to the extent that whoever did it had forced it so much it had pushed one of the pins backwards, the plug had gone on just enough to have taken the warning message off but was in effect just pushed up against the connections, so every movement of the vehicle, bumps or wind would break the connection.
He removed the sensor, pulled the pin out and hey presto, fitted properly and clicked into position. Impossible to imagine how their fitter had not realised it wasnt fitted properly. A real apprentice mistake.
Anyway, now fitted properly, I'm supremely confident. Car was booked in to l/rover to look at it, had to wait another week though ( meanwhile wife couldnt use the car as she couldnt lock it) So I rang to cancel and told them they hadnt fitted it properly and all I got was , "ok I'll cancel that then"
Not at all impressed really. Id only gone to them as they are just up the road and my friend is some 40 miles away now as we have moved recently.
So there it is, was a dodgy sensor originally and L/r bodged the replacement, what an ordeal.
So thanks for all the advice and replies, respect to you all.