Geographers’ Map Company Ltd. (A-Z Maps) was established in London on 25 August 1936. The company’s most famous publication, the iconic A-Z Atlas and Guide to London, was created by Phyllis Pearsall, the founder of A-Z, who explored every street in London to create the first edition. Since then, A-Z has become the trusted source for street maps and atlases, as well as developing Visitors’ Guides, Road Atlases and the Adventure Map series for walkers.
Author of a wide range of brain-training and puzzle books for both children and adults, including best-selling Ordnance Survey Puzzle Book, Brain Games for Clever Kids, The Kids' Book of Crosswords and The Mammoth Book of New Sudoku, plus many dot-to-dot, maze and activity books.
He is also the creator of online brain training site www.BrainedUp.com, and runs the daily puzzle website www.PuzzleMix.com. He gained his Ph.D from Cambridge University.