Balfour Beatty has won a contract worth £154 million to transform the Olympic Stadium in east London.
Last summer, Balfour was awarded the contract to convert the stadium roof and will now lead the remainder of the transformation work.
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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.