Thanks Howard.
All dials came on as expected but hitting the start button did nothing but provide two audible clicks from the starter motor. With the jump leads attached to a Range Rover the thing fired into life straight away. The run down was traffic ridden (3 hours to do 90 miles) but uneventful - the car did seem to increase revs at one stage (I assumed the passenger had hit the air-con button but hadn't) when waiting to get into Goodwood but nothing else out of the ordinary.
You're right about the audible whining - with the radio on, the note increases with engine speed - it sounds like a WEC hybrid.
With the new battery attached it is starting after being left for a while, however I'm concerned by the dimly lit windscreen heater button and audio whining. Plus I need this to be reliable for the girlfriend's commute or I'm for it! It might be a good time to book this in for an early service.
I'll post up a picture of the battery (before change) and the wires attached tomorrow.
