Im not having a dig either mate there is a lot of miss information being spun by people about AD in the line Im just trying to tell you how your dog is bred in regard to AD , when you said the AD made it this way and that way thats what made me respond because thats not the way it is , yes your dog has AD in it and its so far back in the line its genetic value is all but gone ( rough coat ) , the English Bull Terrier is even further back , did your vet say he can see it before you said it was there or after you said it I will bet you if you rocked up and said whats in this dog AD would not of got a mention , vets know very little about breeds same as a doctor couldnt tell you the difference between all the Asian races , an all breeds show judge would have more insight into breeds than a vet .
If you got your dog of Frosti its a Frosti bred Bullygrey not a Bullygreyhound/Airedale unless your dog is of his own AD cross he did a short while back , it might be a second cross from that I dont know but if its not , and is from the old BGs its a BG , Frosti got his dogs from somebody else he did not make his own breed or did he add anything to change them and make it his own until just a year or so ago ,,BGs have a recorded breed history spanning over 30 yrs so Frosti would have the pedigree if you ask him for it ask him for a pedigree then you can see how your dog is bred for your self , .
Its good looking hound it should go real well for you .