David had both legs amputated through the knee when he was a few months old, having been born without tibia bones. As well as pushing marathons and being a five-time participant in the Great South Run, David has also completed a 24-hour wheelchair push. He has also played over 300 games for South Hants Sitting Volleyball. In 2016 he was the recipient of the 2016 #wecandoit Personal Achievement Award. In 2019, David completed a marathon a day for 30 days for charitable causes.