Telegraph puzzle books have sold in excess of 1.5 million copies since their launch. The Daily Telegraph is the UK's most widely-read, quality newspaper, with a daily circulation of over 600,000. Telegraph readers have a strong brand loyalty, with books associated with the brand, such as Am I Alone in Thinking: Unpublished Letters to the Editor selling nearly 100,000 copies.
One of the Daily Telegraph's most successful puzzles, the daily Codewords have won thousands of fans since their introduction in 2003 because they require a unique combination of vocabulary and numerical skills. Each grid contains numbers that correspond to a letter of the alphabet, with the help of a handful of solutions, the puzzler must crack the code.