Emergency crews are tackling a simulated plane crash in London's Docklands, in one of their biggest exercises ever. A real fuselage from a Boeing 737 aircraft has been partially covered using 400 tonnes of rubble, for the three day training drill.
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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.