I’m sorry I don’t normally disagree but if you check online it was a BBC production. I live in the U.K. It was shown here on bbc2 long before it came on Netflix.

Don’t be sorry, we had this endless debate already 😀 It’s a coproduction between BBC and Netflix. They injected a little bit of money in the first season, more in the second and even more in the third one. They own the selling rights abroad (I know that because the network I work for wanted to buy it, but we finally didn’t, and Netflix was selling it, not BBC). It started as a BBC show and definitely ended up as a Netflix one.