Pizza Express founder Peter Boizot, 89, has died at his home in Peterborough, his sister Clementine Allen said.
A serial entrepreneur, Mr Boizot opened the first Pizza Express on Wardour Street, Soho, in 1965 and is credited by many with revolutionising the casual-dining experience.
The brand now has more than 500 restaurants worldwide.
Mr Boizot was a former owner of Peterborough United FC, which posted a statement saying: "Peterborough United Football Club are saddened to learn of the passing of former owner and chairman Peter Boizot at the age of 89.
"The Pizza Express founder was a major part of the success in the late 1990s/early 2000s when Posh secured promotion at Wembley in 2000.<
"Everybody at the football club would like to express our condolences and deepest sympathies to the family at this very sad time."
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