[1] Located in the City of Westminster, it runs west from Baker Street in a straight line until it begins curving when it becomes Harcourt Street towards the Old Marylebone Road.
It was laid out in the eighteenth century as part of the grid-like pattern of the area, developed from the Portman Estate as affluent housing.
[2] A number of the buildings retain their original Georgian design.
[3] Among prominent residents of the street is the Victorian painter George Richmond[4] and the writers Frances Milton Trollope and her sons Thomas and Anthony Trollope.
[5] The northern, rear side of the neoclassical St Mary's Church, designed by Robert Smirke and built from 1823 to 1824, faces onto York Street.