The 2026 edition of the UK Sudoku Championship will take place slightly earlier than in previous years: specifically, between Friday 22nd and Monday 25th May.
The contest page is here: https://ukpuzzles.org/contests.php?contestid=75
Instruction booklet available on the contest page
Questions and discussion about the contest will take place here: https://forum.ukpuzzles.org/viewtopic.php?t=2835