Conveniently, I've put together an isochrone map generator:

https://benwheatley.github.io/Isochrone/web/?region=london&c...

The origin point selected here is roughly Mermaid House, on the north side between the Millennium Bridge and Blackfriars station.

My route-finding here is more than a little naïve, instant acceleration to each road's speed limit, full-speed turns, no traffic, lights always with you, etc. but there is a place within 60 minutes of all locations, pre-selected in that URL.

Google Maps gives quite broad time ranges if you say you're travelling at 02:00, so there to e.g. Langleybury House & Film Centre, just inside the M25 in Watford, is 45m to 65m.

Logically, no, as they all neighbour non-pub locations. There's a coffee shop or restaurant within a minute or two of each of the top 5, from memory.

There used to be some UK celebs (David Baddiel, Clive Anderson, others...), who used to regularly eat in a restaurant near the Crown & Anchor after their weekly 5-a-side football games, which is why it stands out in my mind.