The family of landscape architect John Hopkins have planted an oak tree in the Olympic Park to remember him. Mr Hopkins helped to design the park before the 2012 Games but died in January.
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John Nolan, who was found with cigarettes and two lighters, suffered burns on 65% of his body after being alight for around six minutes.
Known as Pily she died in January, seven months after the disaster, having suffered a stroke.
The shake-up also aims to smash the "myth" that officers cannot pursue riders who are not wearing helmets.