
I would say the Polski Owczarek Podhalanski (Tatran sheepdog) would not easily be mistaken for a Golden, as they are nearly as large as a Pyrynean Mountain dog. Also as far as I know they are very little known outside of Poland or the former Eastern Bloc countries, and certainly not be seen in England.
They are a lovely dog though, I have pictures that I can scan from the show in Poland I saw them at.