Apparently they are in agreement with the dealership.
As Dad has not paid for any of the parts or the work, it is only covered until the end of his own 12 month warranty which was taken out when he bought the car in April 2011 (I think it was April - could be Feb).
I find this odd as the person I spoke to confirmed that if he had not shelled out for a warranty when he bought the car (for just such an occurance), the work would have still been done FOC and be covered by a 6 month or 10,000mile warranty. Also in theory, he could have had the work done elsewhere, paid for by Audi UK and be covered by an Independant Garages guaranty...
So much for brand loyalty.