Here's the trailer - pretty fair representation
https://youtu.be/l6j5bDoga9Y
If you like historical stuff, it's really good. I've always been fascinated by that pre-England period (Alfred only English King to be called "the Great", and he's much more clever than tough). Series really gets going around the third episode where he makes his appearance.
BBC stuff tends to be a bit more....sparse than U.S. stuff, but that fits this period perfectly. There's absolutely no glamour - the women are decent looking but not HBO-hot and they don't get nekkid.
Lots of fighting, and they absolutely nailed cultural/attitude differences between the pagan Danes (cool as hell) and Christian Saxons.
It follows one Saxon noble who was captured as a child and raised by Danes, then has to flee after his adoptive father is murdered and he gets blamed. Great character because his loyalties are somewhat divided. He despises Christianity, has a short temper, and so doesn't always think ahead. Acting is excellent all round.
Just looked it up - very highly rated on Rotten Tomatoes and IMDB, and a lot of Game of Thrones comparisons. It's a less intricate story, and of course it's historical with no fantasy elements. More fighting, and more dirt.