can anyone tell me if you can get a black and white bulldog that is kennel club? and can you show them?

Ask the Kennel Club or the breed club for the contact numbers of breeders with pups due or planned

No and No

is this anything to do with an ad for one for sale
I think you will find its an old English or American

black and white bulldogs are highly undesirable in the show ring,so is a solid black american bulldog,however in the dorset olde tyme bulldog,black and white is highly desired only one dorset i know of is black and white (pied),and from what i have heard on the dorset front there are many people wishing to use him at stud to their bitches,in the hope of producing puppies of his colour.i have seen this dog first hand,and he is a beauty!Brad.