More than 2,500 troops - sailors, soldiers and Royal Air Force personnel from nearly all areas of the Armed Forces - will parade before the Queen and the Duke of Edinburgh through Windsor today. They will be joined by a tri-Service Guard of Honour for Her Majesty, and six military bands.
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Across the country people are pledging to run 3.7 miles in memory of Matt Campbell who died while taking part in the London Marathon.
Jonathan Munro is giving evidence during the latest stage of a High Court trial in London.
But while he wasn't showing it, PC Tyler O'Hare was enjoying every minute of it.