I'm going to shill We Happy Few some more, since we're talking about Fallout: London.
It doesn't have the quest structure of Fallout, since it's linear open world quests with some linear world sections too, but the basic handling of the game (controls, how you late, being kind of jank) feels exactly like Fallout to me. Now, that's kind of bad - nobody plays Fallout because it's jank - but it's got a nostalgic feeling. I actually enjoyed the jank because of that.
Then, it's got the 1960s retrofuturism, more retro than futurism, but still, and it plays heavily into British dystopian themes instead of American apocalyptic themes. And it does that, in my opinion, EXTREMELY well.
So when you talk about Fallout being distinctly American and Stalker and Metro being distinctly Russian (like
@Mnutu said), I think We Happy Few fills that same space with being distinctly British (even though it wasn't made by Britons) and is probably a much better game than a British Fallout clone could be. It plays to the themes of that country and its spirit better.
You all should try it. It got a bad rap at the time because of its boneheaded development and it is rough around the edges, but there is a sparkling gem of a game in there. You won't get decision-making/dialogue trees in quests, though, or the "tourism" aspect of Fallout (which is itself a huge chunk of Fallout's appeal).