I've only seen the US version. I should watch the UK one.
I specifically mention the US one because its only one season and has a story conclusion. I watched it specifically after searching for shows that had satisfying endings. I was tired of watching series that ended but the story didn't.
Granted the conclusion of Life On Mars US feels rushed, because it was, they didn't get a second season, but they made it work and concluded the story.
Wait, but Reign of Fire is the best dragon vs. helicopter movie ever made!