Hi Dave,
I'm very grateful to you - you really shouldnt have spent the time on locating this !!
Today driving from Dorchester to Beaminster (visiting our son, partner and 11 mth grand daughter) all was well and then, yes, the "DSC Not Available" light illuminated - and remained on. As i had had a new "ABS Fault" sensor fitted to the code identified wheel (o/s rear) last week, the lights did not progress to "ABS Fault" or "Gear box Fault" - so the sequence was broken.
I swill book the car in to Crossways Garage (Woodsford) on Monday, with a list of current / update on work as it is a new arrival for them. They come very well recommended - although not Jaguar specialists.
Thank you for your advice and patience !
I will keep you posted.
Regards
Dominic
PS: Southwold - I believe you are right !