Greggs plc is the largest bakery chain in the United Kingdom. It specialises in savoury products such as bakes, sausage rolls and sandwiches and sweet items including doughnuts and vanilla slices. It is headquartered in North Tyneside, near Newcastle upon Tyne. It is listed on the London Stock Exchange, and is a constituent of the FTSE 250 Index.

Greggs was founded by John Gregg as a Tyneside bakery in 1939. It opened its first shop in Gosforth, Newcastle upon Tyne in 1951. When Gregg died in 1964, the bakery was taken over by his son, Ian, assisted by his brother, Colin. Major expansion began soon after, including the acquisitions of other bakeries such as Glasgow-based Rutherglen in 1972, Leeds-based Thurston's in 1974, Broomfields the Bakers, London, Bowketts the Bakers in Kent, Tooks the Bakers (East Anglia) and Price's (Manchester) in 1976.

By the 1990s, it was the largest bakery chain in the country after acquiring its major rival, Bakers Oven, in May 1994. In 2017, the chain had 1,764 outlets, including 143 franchised outlets.

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