I’ll go first…The Office.
Now I know the two shows are fundamentally quite different, but they adapted what was already a very successful show, and turned It into an event more successfully one that lasted for significantly longer than the original did. I say that’s a win for them.
Anything else? Life on Mars, Being Human, The Inbetweeners…?
Robot Wars is actually an American show and Battlebots is an off-shoot.
Robot Wars was created in America but the first televised show was in the UK.