Numbers 11-26 And Attached Railings, Byron Court (Number 26)

Numbers 11-26 and the attached railings, including Byron Court (Number 26), form a terrace of 24 houses along the east side of Mecklenburgh Square. The houses were constructed between 1810 and 1820 by Joseph Kay, with contributions from Thomas Penthrin who built Numbers 11-19 and 30-34, and George Payne, who built Numbers 20-29. Numbers 15 and 27-34 were rebuilt around 1950 to match the original design.

The terrace is constructed of multi-coloured brick with stucco ground floors. The central pavilion (Numbers 21-25) and the end pavilions (Numbers 11-15 and 31-34) are stucco-faced. The overall design is formal, with four storeys, basements, and 20th-century dormers on some properties, particularly Number 23 which has a large dormer. Most houses have two windows each.

The central pavilion features rusticated stucco on the ground floor, with round-arched doorways supported by fluted pilaster-jambs and cornice heads incorporating a Greek key pattern. These doorways have fanlights and panelled doors. A recessed section contains six bays with four Greek Ionic columns rising through the first and second floors, flanked by three bays articulated by pilasters. The building includes an enriched entablature with a projecting cornice at the third floor level. Recessed sash windows are present throughout; the ground floor outer bays have segmental heads with small panes to the edges, while the first floor windows in the central six bays have pedimented heads. The outer bays of the first floor have square-headed windows set in shallow round-arched recesses. All first-floor windows are accompanied by cast-iron balconies. Between the first and second floors, the outer bays feature enriched recessed panels mimicking the round-arched windows of the attic storey. The attic storey has moulded pilasters that support a cornice, with the centre pilasters terminating in segmental anthemion stops. The outer pavilions mirror this design but with only two Ionic columns.

Numbers 16-20 and 26-30 have round-arched doorways with fluted pilaster-jambs, cornice heads (Greek key pattern), fanlights, and panelled double doors. Some doorways have been replaced with windows, with the exception of the former Number 29 which now serves as the main entrance to Byron Court. The ground floor windows are segmental headed. The upper floors have gauged brick flat arches over recessed sash windows, with cast-iron balconies on the first floor. A plain stucco entablature runs at the third floor level, surmounted by parapets.

The interiors were not inspected during the listing assessment.

Attached cast-iron railings with urn finials define the areas, and Numbers 12, 14, 16, and 19 feature wrought-iron lamp brackets.

Historically, Number 21 was the residence of R.H. Tawney, historian, teacher, and political writer (marked with a Greater London Council plaque). Numbers 15 and 22-25 were separately listed on May 14, 1974.