Police are understood to be searching for chemical substances at a London property after two people were arrested under anti-terror laws. A 19-year-old man and 36-year-old woman were arrested in Streatham and Stratford.
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Captain Mike Green, a senior flying instructor, was piloting the two seater helicopter involved in the crash.
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.