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 575,000 and a Saturday circulation of 770,000. Telegraph readers have a strong brand loyalty, with books associated with the brand, such as Am I Alone in Thinking: Unpublished Letters to the Editor selling nearly 100,000 copies. Combining a popular puzzle and a popular newspaper, Telegraph All New Cryptic Crosswords 4 has a well-established, loyal readership.