The US broadcast syndication market is really only set up to sell shows that have more than 100 episodes. I think UFO, Space:1999, and the 1955 Robin Hood were among the few shows seen on regular non-PBS stations. The Disney Show would sometimes run UK-filmed material. (Scarecrow, Thomasina) Partly it's because Americans can't understand the words when they hear many UK dialect accents, so they tune out those shows and that tanks the ratings. Even if you give a station a free tv show they lose money if no one watches it. We do better at remaking shows like All in the Family, Sanford and Son, Skins, and Being Human.