One Leadenhall

Delivering a 35-storey office tower beside Grade II* Listed Leadenhall Market required careful management of heritage interfaces, constrained access and complex public highway works. The shared party wall needed detailed movement monitoring, while highway improvements involved separate delivery arrangements for Transport for London and the City of London. Overlapping base-build and tenant fit-out programmes added complexity, with early access requiring close coordination across multiple clients and project teams to create a seamless transition while protecting each party’s interests.

G&T provided Project Management and Construction Management services for the base build, delivered through a construction management approach, alongside tenant fit-out coordination and monitoring. Four G&T project management teams worked across the development and individual tenant commissions, including the 300,000 sq ft fit-out for Latham & Watkins, occupying approximately 70% of the building. Close collaboration helped coordinate early access, manage interfaces between construction and fit-out activities and align delivery requirements while maintaining clear responsibilities to each client.

One Leadenhall delivers approximately 420,000 sq ft of office accommodation, ground-floor retail and enhanced public space in the City of London, achieving record-setting rents. A publicly accessible fourth-floor terrace offers views over Leadenhall Market, complemented by private upper-level terraces, wider pedestrian routes and a double-height colonnade. The development achieved BREEAM 'Outstanding' and was designed to WELL standards. G&T’s coordinated Project Management supported the transition from base build to tenant occupation, helping align multiple programmes and client requirements.