Here's a PBS segment on this as well: https://www.youtube.com/watch?v=zNhUk5v3ohE
I've always been amazed by the number of truly terrible British TV comedies.
The American's did it in the 50s through the 80s but wow - British comedies take the cake.
Basically this is based on stereotypes and some sense that they are in and of themselves, funny.
They aren't. This show is really worse than bad.
Also, learn how to spell twice.
Unfortunately as a Verge commenter pointed out this is only going to be on CBS All Access, which means about 3 people will watch. It going to have to be better than "really, really good" to get people to pay for another streaming service.
Just watched the full episode - it's pretty good.