Multiplex appointed to deliver £250m redevelopment of 75 London Wall

Multiplex has been appointed as main contractor for the £250 million redevelopment of 75 London Wall in the City of London, marking a major milestone in the £1.2 billion project led by Malaysian developer Gamuda Berhad and UK-based investor Castleforge.

The contract follows the completion of enabling works and paves the way for main construction to begin at the end of 2025. The scheme, designed by architects Orms, will see the building’s capacity increase by more than 50%, with practical completion expected in early 2028.

The project will deliver over 450,000 sq ft of Grade A office space with top-tier sustainability credentials, including BREEAM ‘Outstanding’, WELL Core ‘Platinum’ and NABERS UK 5 Star Design for Performance. The scheme combines adaptive reuse with high-spec new-build elements, retaining much of the existing structure to minimise embodied carbon.

The redevelopment also includes premium amenities, ground floor commercial units, a cultural events space, and Priors Garden – a landscaped public realm designed by Andy Sturgeon that will link seamlessly to nearby Austin Friars.

The appointment of Multiplex comes at a time when office construction starts in London are at their lowest in over a decade. With strong pre-letting interest and the ability to accommodate more than 5,000 employees, the project is expected to deliver a timely injection of high-quality workspace into a supply-constrained market.

Multiplex’s appointment follows a year-long pre-construction services agreement, during which the firm supported the design process and developed technical solutions for the complex, sustainability-led scheme.

Construction follows demolition and structural works carried out by the Erith Group throughout 2025. The project is backed by Castleforge’s newly launched Partners V fund and forms part of Gamuda’s wider £1.5 billion UK development strategy.