I suspected that the solenoid had failed as the car has now done 197,000 miles and must have been opened and closed via the solenoid numerous times.
So next step was to take a look and results are below:
Robs Car Gallery
click below to access nano website
Planning is an unnatural process, much better to just get on with things, that way failure comes as a complete surprise instead of being preceeded by a period of worry and doubt