As Mr Hall took to his JustGiving page to share his motivation to run the marathon, he said: "I've wanted to do the London Marathon on his behalf for a while. "We watched the London Marathon from a helicopter experience over London back in 2014. Heartbreak as man who experienced tragedy at sight of incident will run London Marathon (Image: Supplied)"This is the only thing I'll ever do in his memory, so let's make it count." Alongside running an outdoor fitness club in Soham called Infinity Fitness, Mr Hall also supports his training with a free Sunday morning running group. Supporters of Mr Hall in his London Marathon endeavour can donate via justgiving.com/page/jamestakesonlondon