The historical Smithfield and Billingsgate markets are being recommended for closure in a new report.
The DEFRA-commissioned review of London's wholesale markets by Nicholas Saphir, a leading consultant and chairman of the Agricultural Forum, recommends reducing the number of markets from five to three.
Saphir also called for the removal of the six-and-two-third-mile regulation that prevents the markets from competing with each other.
He is proposing closure of the meat and fish markets at Smithfield and Billingsgate, and designation of the three remaining markets, Western International, Spitalfields and New Covent Garden, as west, east and central respectively.
The National Farmers' Union welcomed the report and its vice-president Michael Paske said: "It is important that the City's wholesale markets are not held back or put out of business by historic arrangements that prevent them serving today's changing trading needs."

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