I said nothing of the UK government (even though the UK government does restrict speech more than the US [http://www.npr.org/blogs/parallels/2015/03/21/394273902/on-libel-and-the-law-u-s-and-u-k-go-separate-ways]).
My intent (and I apologize if not 100% clear) was to explain that in the UK, there is public outrage for anything that can be considered by some people as rude. For example, in the United States, Rush Limbaugh can say many, many atrocious things throughout his daily radio show. He can even lie. He can intentionally lie to the public without attempting to shock people with audacious humor.
In the UK, however, audacious humor (https://www.youtube.com/watch?v=fjIuPSuYSOY) is acted against by the public. People who take offense are empowered by weak-willed companies to silence things they don't like to hear... or more accurately, hear about.
Because most of the people who watch Top Gear do so with the expectation of audacious humor-- for the group's non-PC manner of conversation. Once one person says, "Clarkson said this last night..." all these other people who weren't watching call the Beeb and write them letters saying how offended they are. The few loud offended are then touted as "100% of the motoring public" (to steal from Top Gear) and then apologies must be made.
That's how the UK speech is more restricted than in the US.