A memorial service for Hamersmiths Vidal Sassoon will be held at St Paul's Cathedral. The legendary hairdresser died in May. Sir Michael Caine, Mary Quant and Jeremy Irons are expected to be there.
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The 34-year-old from Coulsdon in Surrey died during the private party in Headley in the early hours of Monday, Surrey Police said.
The Home Office made the arrests at various restaurants across London on July 4.
Mayor of Newham Sir Robin Wales criticised the International Olympic Committee on the fourth anniversary of the opening ceremony.