Whizz-Kidz Neon Nightwalk

This ten-mile nighttime walk around the capital's sights is in aid of Whizz-Kidz, which supports disabled children and young people across the UK. It costs £20 to take part and the fundraising target for participants is £150 each. The walk shouldn't take longer than six hours, but Whizz-Kidz helpers will be on hand in the early hours of Saturday morning to account for all walking speeds.