Lipton Rogers wins approval for 1 Silk Street office redevelopment

Lipton Rogers Developments has secured approval for the redevelopment of 1 Silk Street in the City of London, moving forward a major office-led scheme beside the Barbican Estate.

The project, brought forward on behalf of LaSalle Investment Management, will replace existing commercial buildings with new Grade A office floorspace, supported by cultural, commercial, and public uses. The plans also include new and improved public realm, with better movement around and through the site.

The application was first submitted in June 2025 and revised after consultation. Design changes reduced the height and massing of the western part of the proposal by three storeys, equivalent to more than 10 metres, following objections around bulk, daylight, heritage, and the relationship with the surrounding Barbican setting.

The site’s location gives the project a level of scrutiny beyond a conventional office redevelopment. The Barbican remains one of London’s most recognisable post-war cultural and residential estates, and development around its edges has to negotiate the competing demands of commercial renewal, residential amenity, cultural value, and conservation interest.

The approved design seeks to anchor the commercial floorspace in a broader public offer. Cultural space, active uses, and publicly accessible routes have been incorporated into the development, while the office accommodation is intended to meet occupier demand for flexible, lower-carbon space in the Square Mile.

The decision also follows growing momentum around the wider Barbican estate. A separate Barbican renewal pipeline valued at more than £350m is already being prepared, with future packages expected to cover MEP systems, core infrastructure, performance spaces, foyers, staff areas, the Conservatory, and surrounding public realm.

Viewed together, the renewal and redevelopment pipeline shows how ageing civic and commercial assets are being reassessed across central London. Buildings from the post-war and late twentieth-century periods now face pressure from energy performance requirements, occupier expectations, fire strategy, access standards, carbon policy, and changing patterns of public use.

The construction phase at 1 Silk Street will need careful sequencing. Works beside the Barbican will involve logistics management, demolition, structural interfaces, public movement, neighbour engagement, noise control, dust mitigation, and heritage sensitivity in one of the City’s most constrained locations.

London’s office market has become increasingly selective, with demand concentrating around assets that offer efficient floorplates, strong sustainability credentials, high-quality amenities, and resilient locations. Older secondary stock remains exposed where it cannot meet those expectations without substantial capital expenditure.

That market split is pushing more owners towards deep refurbishment, partial retention, or full redevelopment, depending on the condition and adaptability of existing buildings. The result is a construction pipeline that is technically more complex than previous office cycles, with carbon, structure, services, façade performance, and public realm all carrying greater weight in viability assessments.

The approval gives Lipton Rogers and LaSalle a route towards delivery, although procurement, enabling works, and detailed construction planning will determine the pace from here. In a setting as closely watched as the Barbican, the physical delivery of the scheme will be judged as carefully as the planning process that has now cleared its first major hurdle.