The Diageo Staff Association was a small trade union in the United Kingdom.
The union was founded in 1965 as a staff committee at the Guinness brewery in Park Royal, London. Originally named the Guinness Brewing Staff Association, it gained a Certificate of Independence in 1979, when it had only 136 members.Arthur Ivor Marsh and Victoria Ryan, Historical Directory of Trade Unions, p.512 It was renamed the Guinness UDV Staff Association in 1998, when it also affiliated to the Trades Union Congress (TUC). In 2003, it adopted its final name, by which point it had 531 members.Arthur Ivor Marsh and Victoria Ryan, Historical Directory of Trade Unions, p.201 By 2009, its membership had fallen below 400, and it was the smallest union affiliated to the TUC."Q&A: The TUC", BBC News, 15 September 2009
The union was dissolved early in 2010.List of Defunct Trade Unions, Trades Union Certification Officer
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