There is only one utility breeder listed on the Leghorn website and this is not the place to look if you are after layers. Very few of the Breed Clubs cater for layers, just exhibition birds, although Foxy says the Faverolles Club is keen to preserve the utility features. Cock breeders/pullet breeders is just for the show people, for egg laying it's irrelevant. I breed males with upright combs and hens with flopped combs from the same mating.
I have pm'd you with a number to try Martdog3.