I made enquiries about this last year as we have MV accredited Zwartbles and wanted to get a native breed, however it was going to be a problem, don't think there were more than one or two accredited breeders ( I also made enquiries about Kerrys and the situation was the same) - ended up getting Shropshires! I would contact the breed secretary they should be able to advise you of the current situation regarding any MV accredited flocks.