Listen, it's not very often that we talk about PC mods multiple times in a week, but Fallout: London is an important exception - this DLC-sized mod has been highly anticipated for many years, and it's just launched for free on PC!
If you're interested, you can download it right now... although be aware that the PC Game Pass version of Fallout 4 sadly isn't compatible with Fallout: London. Instead, you'll need to own the game on either Steam or GOG.
It's still very early days for Fallout: London, but the impressions we're seeing so far are generally positive aside from a quite significant number of crashing issues. Once you get past those though, it sounds like a fun time:
Just yesterday, we mentioned how Fallout: London sadly isn't coming to Xbox at launch, although the developers seem keen on porting it with Bethesda's help. Is Bethesda interested though? That remains to be seen...
"Fallout: London lets you explore a dishevelled London set in the Fallout universe. It overhauls Fallout 4 with a new story, new weapons, London-centric items and a vast recreation of the ruined city to explore. It's a free total conversion mod, available to anyone who owns the base game and all of its DLCs. It is developed non-commercially by Team FOLON, many of whom are proud London residents or expats."