You're missing a few. Also, some of those have closed. Because of these discrepancies this map is literally unusable.

Road trip?

How many of them are called The Winchester?

Why so empty on the northern part? Non British here.

damn bro the night life really is dying. Barely any pubs nowadays.

Nope, incomplete. Here's one at the tip of that peninsula-looking island that's left bare (Skye).

I'm curious now it there actually is a spot in the Hebrides or Highlands where you can be more than a day's walk from a pub.

It'll be interesting to remove the Red Lion and see the difference

Looking at that blue line, OOP solved the traveling Irishman problem.

This is missing a few, there's more than that in the rural regions of Scotland.

Great! Now do every bar in Wisconsin…

Why does it include part of Ireland? That's a completely different country.

What’s the deal with the hole in the cloud of pins near the England / Scotland border?

I'd be interested to see the alcoholism rates over history compared to the US. That's a lot of pubs, but I have a feeling the rates are lower there.

I recently visited one in Belfast.

Sample output from my D&D pub name generator:

Goblin and Squirrel
Golden Pot
Sleepy Troll
Cheerful Spoon
Baldric and Frog
Green Toad
Stoat and Halberd
Goose and Halberd
Squirrel and Halberd
Goblin and Sword
Well Fed Duck
Laughing Duck
Eye and Goblin
Squirrel and Hen
Kobold and Dog

Dunno why it likes halberds so much here. It has its moods.