Sloane Street was developed by Henry Holland for the 1st Earl Cadogan (1728-1807). Charles ‘Sloane’ 1st Earl Cadogan sold the development lease to Henry Holland in 1777. Sloane Street today is home to the world’s leading fashion houses and on a day-to-day basis The Welcome People Ambassadors greet an average 200 visitors. Find out how they impressed the Estate Improvement Manager at The Cadogan Estate.