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Frank Cooper was a British company that is famous for its "Oxford Marmalade". It continues as a brand for marmalade and jams.
The Frank Cooper brand continues for marmalade and jams. It carried the Royal Warrant and is now owned by Premier Foods. The range now consists of Fine Cut, Coarse Cut and Peel Free marmalades, and also two premium mincemeats.
At 83 High Street, Oxford, there is a blue plaque (installed on 10 October 2001) that commemorates Sarah Cooper (1848–1932), marmalade maker and wife of Frank Cooper, whose shop at 83–84 High Street was the origin of the Frank Cooper jam business.