So despite the long round trip of 420 miles as opposed to 70..I will be taking a trip to Doug at Westroen.who I have to say seemed a really helpful pleasant chap when I spoke to him on the phone... Not a bit like yer local Citroen dealers (most of them anyway) Shall leave my responses here after my trip North.
I'd also like to voice my thanks to the Forum as a entity....Today after purchasing a new Rear ABS Sensor for the Xantia.... had to abandon the operation cos I couldn't find the flaming connector..but thanks to previous contributors...You Guys know who you are....I now know them to be hidden on the subframe on top.... so having another crack tomorrow if it doesn't pour down. Of course getting the sensor out may be another nightmare.