Scheme to replace facade and add two storeys to 1980s block in Fleet Street conservation area
John Robertson Architects’ plans for the refurbishment and extension of a six-storey office building in the City of London have been approved.
The 10 Salisbury Square scheme has been designed for a joint venture between developer Simten and investor Invesco Real Estate Europe Fund III.
It will create 52,500 sq ft of grade A office space on the western fringe of the Square Mile close to Christopher Wren’s grade I-listed St Bride’s Church.
The site is located within the historic Fleet Street Conservation Area with other nearby heritage assets including Edward Lutyens’ grade II-listed Reuter’s building and the St Bride’s Institute.
John Robertson Architects (JRA) said the existing 1980s building, which is clad in brown brick, clashes with its more historic surroundings and lacks visual coherence.
The practice said the building also no longer meets current energy efficiency standards and requires a major upgrade to remain viable for the modern office market.
The scheme will retain over 90% of the building’s structural frame while installing a new facade with a four-storey oriel window overlooking St Bride’s Church and adding two storeys to the roof.
JRA director Anja Schellenbauer said the scheme “underscores how strategic retention, contextual sensitivity, and commercial viability can be aligned to deliver genuinely sustainable, progressive and future-proof office developments.”
The project team includes project manager B&Co, cost consultant Core Five, planning consultant Newmark, heritage consultant Donald Insall Associates, structural engineer Heyne Tillett Steel, facade consultant Thornton Tomasetti and landscape architect PAD Landscapes.
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