From its earliest days in Victoria's reign, London's subterranean transport system has depended for its operation on accurate and synchronized time. Today, millions travel daily on the Underground, guided almost unconsciously by the clocks around them. Yet the story of how timekeeping shaped the Underground - and how the Underground helped drive the development of clock networks across the capital - has rarely been told.

Drawing on the worlds of horology, electrical engineering and railway operation, this book traces the evolution of Underground timekeeping, from mechanically regulated station clocks to electrically connected systems comprising thousands of timepieces across the network. It explores the commercial rivalries, technical innovations and practical demands that lay behind the public face of Underground time.

Richly illustrated and grounded in thirty years of original research, the book reveals a hidden infrastructure - from ornate heritage dials to modern quartz and computer systems - that most passengers scarcely notice, yet upon which the reliable operation of the Underground depends. Time on the London Underground offers a fascinating insight into one of the least explored aspects of London transport history.

David Burton, Time on the London Underground. AHS 2026. 216 pages, 207 illustrations, fully referenced, with a detailed index, casebound, 250mm x 220mm, buckram cloth cover, 150gsm art silk paper, head and tail bands and silk ribbon, printed dustjacket

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