The UK is actually much less progressive than the US when it comes to censorship and filtering. There is no Internet filtering of any kind by any ISP in the US; it's illegal for a common carrier to filter traffic in that way. Some lobbyists are pushing ISPs to block access to sites that allow copyright infringement, but nothing of that nature has started yet.

The UK is very arguably also less progressive in terms of surveillance and espionage; GCHQ seems to be even more unethical than NSA, going by a few dozen of the leaked presentations.