London By Diederik Posted 5 January 2018 In London2018-01-052023-08-07https://challenge-london.com/wp-content/uploads/sites/66/2023/05/cl-horizontal-rgb.pngChallenge Londonhttps://challenge-london.com/wp-content/uploads/sites/66/2023/05/cl-horizontal-rgb.png200px200px Let’s Countdown! 28 July 2024 (Subject to final approvals) Loading.. Loading.. SECURE YOUR PLACE FOR 2024