Author and photographer Paul Talling – founder of the www.derelictlondon.com website, which celebrates its tenth birthday this year – leads a series of guided walks that take in London's lost rivers. The Limehouse and Poplar walk (August 17, September 7) is a leisurely, three-hour walk that takes in the exteriors of sites such as the decaying premises of sail makers Caird & Rayner and the Art Deco Poplar Baths. Along the way you'll hear stories of London's original China Town and the 1951 Festival of Britain. Then there's Hampstead's lost rivers (August 24), which looks at three of London's major subterranean rivers. On the way you'll uncover wells, discover a lost pond painted by John Constable and find out which pub attracted the likes of Charles Dickens, Karl Marx and Bram Stoker. Alternatively, follow the lower part of the River Fleet's course (August 24), take in the history of the old London Docks (August 31) or tour the Grand Surrey Canal (September 1), which was closed after World War II and starts in Peckham.
Booking essential via www.wegottickets.com/londonslostrivers.