The Duke of Cambridge will not attend the event at London's ExCel centre as he remains in Anglesey in his role as an RAF search and rescue helicopter pilot, a St James' Palace spokesman said.
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The lawyers are said to have known their clients were members of the Shia militia and not "the innocent bystanders" that was later claimed.
Matthew Rees said the moment he helped David Wyeth cross the finish line of the London Marathon will "live with him forever".
A cold northerly wind sweeps patchy rain and showers in across the UK today - particularly affecting northern areas.