In message , TVS writes
That's were Ill be headed, once I've done a few more checks. The battery has been OK since I recharged it even though the LR has stood for 24 hours on the drive. I'm beginning to suspect it may be the HF car kit which is wired always on. I've checked the voltage at the terminals and it rises to 13.8 with engine running and stays there even with all front light on - about 400 watts of them.
Incidentally last time I went to LR Services I parked my 50th Anniversary Defender - right next to another one!!! No 336 IIRC.