
Available now for pre-order. Please note that all orders will be despatched after the publication date.
Secrets and maps are a match made in heaven. A Second World War military plan of a cave system covered with red stamps, a tatty hand-drawn treasure map marked with an ‘X’, or even your personal phone screen showing a precise ‘blue dot’ location. These maps contain confidential, coded, precious or private locational information and have, as a result, been hidden away or even falsified to preserve the advantage of ownership.
This beautifully illustrated and deeply original book tells the story of how maps, secrets and the data they betray, have come together in western culture over the past six centuries. It uncovers the key clandestine workings of imperial secrets, state secrecy, wider secrets within societies and more recent concepts of personal privacy. Combining the intrigue, excitement and danger that drives human fascination with secrets and the peculiar revelatory thrill that maps give us, it is an essential story with an unsettling edge.
Tom Harper is Lead Curator in the British Library’s Map Department. In this volume he works alongside his fellow curators Nick Dykes and Magdalena Peszko.
All three are curating the Library’s forthcoming Secret Maps exhibition.
256 pages, 280 x 220 mm
150+ colour illustrations
Publishing 24 October 2025
International availability - Europe and the United States.
We have resumed some European and US shipping in line with new EU GPSR regulations and recent changes to US tariffs. British Library Publications, including our subscriptions, are now available for order for customers across Europe and the United States.
We will continue rolling out our most popular products to these regions in stages. If you are browsing from Europe or the US, you can now see the products that are available for you to order.
We’re working hard to expand the offering, so the selection you see online will continue to grow as products are cleared for shipping.
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Our deliveries are now carbon neutral.
Timescale | ||
UK Standard* | £5.00 | 3 - 5 working days |
Please allow 7 working days from the time you place your order to contact us about undelivered orders.
*does not include custom prints or custom clothing.
Local pick up
Local pick up is free and allows you to buy online and collect your items from our shop in St. Pancras (London) or from Reception in Boston Spa.
London
Orders placed before 3pm will be ready to collect from noon the following day (including weekends). Please ensure you check our opening times before coming to collect.
Boston Spa
Orders placed before 3pm will be ready to collect between 2 - 4 working days, though this is usually quicker.
EU and Europe orders
Due to the new EU Regulation 2023/988 (GPSR), not all of our products will be available for you to order yet, we are working on rolling out a wider product range.
Order value | Under £25 | £25 - £50 | £50 - £100* | Over £100* | Timescale |
Airmail | £ 15 | £ 25 | £ 36 | £ 45 | Usually 2 - 4 weeks |
Rest of the World orders
Order value | Under £25 | £25 - £50 | £50 - £100* | Over £100* | Timescale |
Airmail | £ 20 | £ 30 | £ 40 | £ 50 | Usually 2 - 4 weeks |
International orders are shipped on a Delivered at Place (DAP) basis. Import duties and taxes are payable by the customer upon delivery. Orders returned due to non-payment of duties will be refunded for the product cost only, less any shipping fees incurred.
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