Portman Estate area remained largely residential, attracting the prosperous middle class who wanted to live near the centre of London. There were also mews for tradesmen and servants. At the southwest corner of the Estate, where Marble Arch now stands, was the Tyburn gallows, London’s principal place of public execution until 1783. Development of the area north of the Marylebone Road around Dorset Square continued after 1815, and to the North West in Lisson Green, workers’ cottages were built from 1820 to 1840. Many of the original Georgian houses north of Portman Square were redeveloped as mansion blocks, which were let on
River Tyburn Lane—Tyburn Road and Tyburn Lane respectively. Grays Antique Centre near the junction of Oxford Street and Davies Street claims that the body of water which can be seen in an open conduit in the basement of its premises (pictured) is part of the Tyburn; it is undoubtedly close to the culverted course of the stream. From this point the river loosely followed the course of Bruton Lane, Landsdowne Row, the top of Curzon Street, Half Moon Street and across (now under) the southeast path of Green Park to the front gates of Buckingham Palace from where one mouth allegedly used