Greene King is a British brewery established in 1799 in Bury St Edmunds, Suffolk. It has grown to become one of the largest British owned breweries in the UK through a series of takeovers which have been the subject of some criticism. It is listed on the London Stock Exchange

London Stock Exchange

The London Stock Exchange is a stock exchange located in the City of London within the United Kingdom. , the Exchange had a market capitalisation of US$3.7495 trillion, making it the fourth-largest stock exchange in the world by this measurement...

 and is a constituent of the FTSE 250 share index. It currently holds 2% of the UK beer market, although its share has been growing for some time.
Greene King's Westgate brewery is in Bury St Edmunds, Suffolk.