Thanks for the great welcome folks! From my research, I have drawn up a map of the UK showing where all the large fowl Houdan breeders (or at least the ones I could find!) are. There is a serious inbreeding problem and they are almost extinct over here, so I have identified the different blood lines and am working with participating breeders in a cooperative and not for profit informal scheme to out cross the birds and increase the number of breeders (I'm not a breeder myself as I can't keep a cockerel, but do hatching, chick rearing, coordination and transport). If you hear of anyone who is interested in any way, then I may be able to help. Thanks and best wishes!