Burnerman, thanks for that suggestion which worked!
Now that I can access the engine compartment and have started the engine two further problems have been identified.
Brake fluid was very low and topped up but the pedal needs to be pumped many times to get some resistance. Sounds as if there may be a small leak and air has got into the system and will need bleeding the air out?
The central UNLOCK button works but the door key does not lock/unlock anything. The 15A fuse is OK.
Any thoughts?
Tony