I think they still do them in Holland, correct me if I'm wrong.
There is a man in Essex near Lea Valley just of the M11 that is/was? using Dobermans, maybe well worth a look "Topdog Security", google them then phone. I had a bitch off them and what a good bitch, the only problem was she would fight and it created unrest in my pack so she had to go at 2years old, a real shame. She went to a car dealer on the Lea bridge road, as a personal protection dog for his home and lived with a small dog which she would tolerate.
I must say there are not many gooduns about, the chap from TopDog had Euro