I have written more than a dozen books for many major publishers including The London Compendium (Penguin, 2003), The Manchester Compendium (Penguin, 2008) and 111 Places in Yorkshire You Shouldn’t Miss (Emons, 2021). I have also edited the entire Sherlock Holmes canon for Penguin Classics. I give talks on cruise ships, and run tour companies in Manchester (New Manchester Walks), London (New London Walks) and Liverpool (New Liverpool Walks).