The IOC’s shortlist of contenders included Istanbul and Madrid.
Seven46 also worked on the previous two successful Olympic bids, London 2012 and Rio 2016.
Seven46 founding partner Nick Varley said: ‘It’s been an honour and a pleasure to have been part of the Tokyo team that achieved this fantastic result and a privilege to work with strong leaders such as President Tsunekazu Takeda and Tokyo Governor Naoki Inose.’
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