I said I'd let you know, this seems to have gone off subject. The ABS needs replacement I am told. About £1,000 or £500 if they can get a second had one. I'm looking to buy. It is a 2006 (about Astra) car, so there it is. Any comments about the price would be interesting. Keep well.
To replace which particular part of the ABS? There is a sensor on each wheel, then the hydraulic and control unit.