Got the Focus in for a service today.
You may have read that the battery died last week but I bought a charger and brought it back to life.
I'm convinced the battery is fine. Car dash showed a consistent charge all week.
Mrs sTTu mentioned the battery was flat to the garage and they said they'd check how it performed when cold. It apparently started the car twice but on the third time, it didn't. Good enough to pass the MOT, but showing signs of age, perhaps.
I'm thinking that with the charger I could get another year out of it. Or am I just playing Russian roulette with the car starting?