The London MSO have included shogi in their schedule for this year, it's on the evening of Sun 18 August.
The schedule is at https://mindsportsolympiad. com/2024-schedule/ and registration is expected to open soon.
Information on the London Shogi Club, shogi events in or near London, and occasional other stuff. Shogi is Japanese chess, and the key way it differs from regular chess is that when you take your opponent pieces, you keep them, and can 'drop' them back on the board later. It's pretty popular in Japan so you often see it in anime and Japanese art, but it's not very well known in the UK.