Dawn went out to get a bag of birdseed from somebody offering it free via freecycle, about 10 minutes drive away. She has been gone about half an hour...

Just had a phone call from her... her car broke down near the station :( and she is has called the breakdown people.

Looks like it's probably the Alternator... had to charge the battery a couple of weeks ago because it went flat. It appears that it has not been recharging properly since then by the alternator. Happy days.