I'm not going to say that they don't exist, because you never know what project someone is going to work on next, but the British Standard does not recognize Orpingtons in Partridge. Besides, the tail on that bird resembles a Rock more than it does an Orpington. I'm guessing that someone took advantage of her breed naivety, or else just didn't know himself.
I used to envy the Europeans the many breeds which they have which we do not. Things like Augsburgers, Brakel, Breda, Friesian, Marsh Daisy, Norfolk Grey, North Holland Blue, many different games, many different Belgian bants besides d'Anvers and d'Uccle, Scots Dumpy, Sulmtaler, various Japanese breeds, Brabanters, Owl Beards, the beautiful Dutch Kraaikop, Eikenburgers, French Guineas, and the list goes on and on. Still, we do have some things that they don't. I've always been somewhat proud (boastful) that our American breeds have been so desireable, that just about every other country has seen the need to use and recognize them. The Narragansett is pretty much our only native poultry breed which hasn't caught on worldwide. The Brits are starting to catch up to our Call ducks, but for years they were nowhere near as nice as ours. The quality of our geese is far and above theirs. Most of the bigger, hard to hide birds like that were wiped out during the war. Oweing to the scarcity of land, and the difficulty in hatching large numbers, geese never really rebounded there in good quality, until recent imports from the US in the past decade or so brought back some new blood
The Brits and the other Europeans do have something far ahead of us, and that is their common sense and their still somewhat close association with, or at least toleration for agriculture. Although I understand that even now in England this is starting to change, by and large, they don't see it as the end of the world if heaven forbid the neighbor in a residential area decides to raise a few chickens, including a rooster. It's no wonder much of the rest of the world sees Americans as spoiled fools.