Absolutely Nasty® Kakuro Level Four
Conceptis Puzzles
Mental_Floss Sudoku
Frank Longo
Absolutely Nasty® Kakuro Level Two
Conceptis Puzzles
Absolutely Nasty Sudoku: Even Nastier - Level 4
Frank Longo
Waffle: The Word Game
James Robinson
Instant Pub Trivia
Rick Saldin
Getaway Crosswords
Stanley Newman
The Very Pointless Quiz Book
Alexander Armstrong
The Big British Railway Puzzle Book
National Railway Museum
The Ordnance Survey Puzzle Tour of Britain
Unknown
The Ordnance Survey Puzzle Book
Great Britain Ordnance Survey
The Very British Problems Christmas Quiz Book
Rob Temple
The Very British Problems Christmas Quiz Book
Rob Temple
Have I Got News For You
Have I Got News For You
The Bookshop Murder
Henry Lewis
The Rabbit Hole Book
Richard Coles
Know Your Own IQ
Hans Eysenck
