Even if he wanted to make a UK Fox News, and I doubt that he does (and he's denied it), he couldn't because Ofcom wouldn't allow it.
You say that, but talkRADIO comes pretty close under Ofcom rule. Obviously they have to stop short of telling you who to vote for and get guests on who balance things out a bit, but presenters are free to go on rants and give their view of the world.
And Jeremy Vine bores us to death about cycle lanes on the BBC. There's a difference between delivering news and making comment. Outside of straight news, broadcasters give their opinions on things all the time. If someone goes on a "rant" (increasingly, these days, an opinion you don't like) then so long as it's clear it's that person's opinion, not an official stance of the broadcaster or with deliberate intent to mislead (as opposed of believing something you don't happen agree with) then it's fine, for the most part.
Ofcom has its lines when it comes to these things and it's far stricter than the FCC in America. Close or not, if talkRADIO falls under Ofcom rules, it falls under Ofcom rules. You not liking it isn't a factor.
The mainstream US networks are a toilet these days. Not just Fox but ABC, CBS, NBC and CNN. The other four are just as left/Democrat biased now as Fox is right/Republican biased. If talkRADIO is the worst we've got here, then it's really not so bad.
We'll see how GB News pans out. I've never seen Andrew Neil as the Trumpian character some on here seem to think he is. Maybe it's a Jeckyl & Hyde thing and now with essentially his own platform and the tempering influence of the BBC removed, the monster will be unleashed. I personally think the reality will be far more mundane but it'll be fun to find out.