The sudden death of a close friend spurred a Northolt man to change his life for the better.
Steve Fisher, 42, lost over five stone and completed the London2Brighton Challenge - a 100km cross-country hike - on May 23.
The sudden death of a close friend and work colleague, who was the same age as him, terrified him enough to make lifestyle changes.
The London-based lift technician told getwestlondon: “He went to sleep one day with a headache and went into a coma. Nobody knows why, but it shocked me enough that if I didn't get a grip with my weight and lifestyle that I could be heading the same way.
“That terrified me so I made the decision there and then to lose the weight, and my partner Suzi agreed to give it a go too and we both lost over five stone each.”
Taking on the charity challenge, Mr Fisher chose to raise money for Cancer Research UK, as he is a dedicated platelet donor, having given 133 donations so far.
He said: “These are used in cancer patients and so Cancer Research seemed the obvious choice. We all know of someone who we've lost to cancer and with better research and understanding one day we may find a cure.”
Having almost smashed his target of raising £1,000, Mr Fisher completed the challenge in 27 hours 45 seconds.
He added: “It was the most gruelling and challenging thing I've ever done in my life and the night-time section was just soul destroying.
“The feeling at the finish was amazing, it was so emotional to finally complete something that had been a year in the making. We were wiped out but on such a euphoric high that will stay with me forever."
Mr Fisher was was also 18 stone 5lbs on New Year's Day when he made the commitment to get fit. He lost five stone five lbs in just 12 weeks and hopes to complete the 105km Isle of Wight challenge next year.
To help Steve Fisher reach his £1,000 target for Cancer Research, visit his Just Giving page.