Yes, it is new so it has that new car smell going on. However, I have been a fan of UK television shows for quite some time. Going back to Captain Scarlet, The Avengers and Doctor Who, which are decidedly different from the US counterparts.
There seems to be greater risk on the part of the producers. The Avengers started out with Honor Blackman and John Steed, then transitioned into Diane Rigg. How many shows in the US survive the replacement of a main character? How about eleven replacements of the main character over a 46 year period? Doctor Who did just that, with its cheesy sets and over the top science the characters intrigued people to keep tuning in week after week, year after year.
So we have the appeal as lack of predictability, more emphasis on quality over quantity, stories that have an ending and a smaller talent pool for acting.
When watching desk and couch shows from the UK, you see more reasonable expectations of the celebrity. That is to say, they appear to be less 'stars' and more actors. More approachable, humble and understanding of where they fit in society. Political correctness has not gored humor.
Could be I'm just tired of hearing the latest tabloid gossip being touted as headline news. Maybe its the fact we never had a caste society.
Whatever it is, I am enjoying the entertainment and news they are delivering.