The Metropolitan Police says it's looking into whether the substance sprayed into the face of an officer may have been ammonia. He was attacked when he stopped a moped rider in Battersea yesterday afternoon.
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A memorial service marked the 30th anniversary of the King's Cross fire which claimed the lives of 31 people.
The athlete, who has been out injured since a motorbike crash in January, has been told he wont receive his annual £21,000 lottery funding.
Four people have died following a mid-air collision between a helicopter and a two-seater plane in Buckinghamshire.