The British Jigsaw Puzzle Library
Lending library who send wooden puzzles by post according to members' preferences for subject and difficulty. A team of cutters keep adding to the collection using different styles of cut.
Chambers Puzzles
Offers a selection of word puzzles, crosswords and sudoku from Chambers Dictionary.
Curiouser.co.uk
An online collection of puzzles, paradoxes, illusions, nonsense poems, and online puzzle games.
Hangman
Provides a collection of games for children as well as ESL students that can be played online.
Mail Online: Coffee Break -
Offers a daily selection of puzzles including a crossword, sudoko, jigsaw, word puzzler and spot the difference challenge.
Planetarium
Free online puzzle and riddle game, presented in twelve weekly parts.
Puzzle Magazines
Publishes a range of monthly magazines focused on different puzzles, including crosswords, su-doku, wordsearches, and others.
Puzzling Place
Exhibition gallery of puzzles, holograms and illusions, including an anti-gravity room and the only Ames forced perspective room in the UK. Located in Keswick, Cumbria.
Quizmk.co.uk
Official website of the Milton Keynes Quiz League, with fixtures and results, social calendar, and a quiz archive.
Sudoku of the Day
Offers daily sudoku puzzles at all levels, with resources for enthusiasts.
Sudoku.org.uk
Offers daily puzzles and competitions, crosswords, related puzzles; also provides resources for enthusiasts, and puzzles to download for use in schools.
Telegraph's puzzles
Daily Telegraph's puzzle site, containing sudoku, crosswords and many other types of puzzle.
UKPuzzle
Collection of sudoku and crossword puzzles in various difficulty levels.