This remains my all round favourite central London pub with a dart board (as opposed to a pub which is primarily about darts). The board is on a dedicated raised oche in the corner, and it is used a lot, including by a bunch of locals who ensure a new board arrives on a regular basis.
This is also a frequent spot for my darts coaching, including some of the cast of London Fields, the worst movie ever built around a darts playing anti-hero. Free-thinking darts. Visit.

Had a throw here today (26/03/2025) as I do from time to time. Brilliant throw.
Lots of space, new board, good light, electronic scoreboard, raised oche, house darts if you need them, tasty pints, tasty pizza.
Great for a casual throw or a competitive match.
Unsurprisingly, this pub hosts a number of teams, so 17:00/18:00 onwards its worth checking availability in advance as the throwing area may well be reserved. But during the day I have never found the board unavailable.
10/10 for the Libertine.