Balcombe Street, Dorset Square and Gloucester Place all date from 1815-1820. Balcombe Street was at first known as Milton Street.

The streets formed part of the Portman Estate. Their layout shows a social hierarchy of square, thoroughfares and side streets mirrored by a hierarchy in the design of houses, from the grand four storey buildings in Dorset Square to the rather less grand terraces and smaller houses in Balcombe Street and Gloucester Place and the significantly smaller scale of the three and two storey ‘third rate’ houses in the side streets and mews.

There are some 180 grade II buildings including the whole of Dorset Square, most of Balcombe Stree...

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Source: Wikipedia