Greene King currently operates over 2,500 pubs, and the latest portfolio change comes as part of its pub estate strategy. READ MORE: Greene King plans to sell 150 pubsGreene King runs pubs across Oxfordshire but has not yet identified which 65 pubs are being put up for sale. Founded in 1799, Greene King operates about 2,500 pubs, as well as 1,000 leased, tenanted and franchised venues. The brewery chain said in an advert that The White Horse was becoming a Hive franchise pub. There is no suggestion that The White Horse is affected by the Project Portico proposals.