The Portman Estate, covering 110 acres of Marylebone in London’s West End, was founded in 1532 when the land was first leased to Sir William Portman. The Portman Estate also has two rural estates in Buckinghamshire and Herefordshire. In addition to its core landlord operation, The Portman Estate runs The Portman Foundation, a charitable trust which supports charities and other causes which are located in or benefit the Marylebone area.