Channel 4 isn't the BBC, it was formed as a commercial alternative to the BBC. But it's still a public UK media company that cranks out extremely good TV series and movies, so it's pretty much the same thing to foreigners.
This is actually part of a series called Comedy Showcase. It's Series 2 Episode 3.
It does not have much more of Will Arnett as the angry boss. Instead there's a lot more of David Cross as an American in the UK, but Will does have a couple of great lines towards the end.