The Director of Public Prosecutions Keir Starmer QC has refused to consent to the private prosecution of terror suspects Babar Ahmad and Syed Ahsan.
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By law, the Met Police has a duty to police public land outside grounds - that's costing them £9.3m a season.
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.