Volunteers from the Royal National Lifeboat Institution will take to the streets today.
Wearing their yellow jackets and oilskins the volunteers will collect public donations for the charity as part of National Lifeboat Week.
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John, who began running for Age UK back in the 1980s when he was aged 53, has raised an incredible amount since then - more than £40,000.
It was Tom's second marathon in two weeks run in memory of his father, Martin Campbell.
Surrey Police are appealing for witnesses after the driver was seriously injured in the crash in the early hours of Saturday.