Trading up: YY London redevelopment transforms former Reuters building

31 March 2025

In the heart of Canary Wharf, a pioneering dockside redevelopment is making waves: the transformation of 30 South Colonnade into YY London.

This iconic building was previously home to Reuters and welcomed financial professionals and visitors arriving via Canary Wharf’s Jubilee Line station with its famous stock exchange ticker display. Now, following Oaktree Capital’s and Quadrant’s major redevelopment, the building has been given a new lease of life, seeing it re-engineered for the demands of the modern workforce.

Originally constructed in 1991, Buckley Gray Yeoman’s striking redesign delivered 408,000 sq ft of premium office space and retail, restaurant and bar units, all while preserving much of the original structure. A powerful example of how transformative design techniques can unlock the potential within existing facilities and extend their lifespan, the scheme released 25% additional floor space through a series of sensitive design interventions developed by Waterman’s structural engineering specialists.

Unlocking structural capacity

Material circularity was fundamental to YY London’s design, seeing the refurbishment feature the extensive re-use of the building’s existing materials. Approximately 95% of the original steelwork was retained, 84% of the concrete slabs were re-used, and the building’s foundations were completely retained, including the marine piles driven into the dock. Posing a significant challenge to the redevelopment plans, these complex foundations were strengthened to support the added capacity required for the two new storeys. To deliver this, Waterman’s team reverse engineered the piles to maximise their load-bearing capacity, ensuring the foundations could handle the increased weight without compromising safety.

The building’s superstructure, originally a steel frame with composite metal deck slabs, also underwent significant modifications. Stability was provided by steel-braced cores located around the central and western sections of the building. During the retrofit, these cores were consolidated into a single central core, improving the structural performance while maximising usable internal space.

Nearly all columns within the building were strengthened, and the existing atrium was infilled to accommodate the expanded floor plates. These changes allowed the building to be extended vertically with two additional storeys, providing modern office spaces without the need for a complete demolition. Elsewhere, the entrance lobby was extended, removing the existing slab to create a triple-height feature entrance space. Within this reception area, a sweeping staircase connects the ground and upper ground levels, and an expansive digital screen wall provides a place to show abstract artwork, whilst a stunning full-height tree stands proudly on a rotating plinth to ensure it grows equally across its crown.

 

 

Creating a new icon

Among the most visible changes was the installation of a striking new façade. With the tired original cladding needing a complete replacement, a stunning new design punctuated by a series of graceful curving arches was selected to create a new landmark for this significant location. The new façade not only enhances the building’s appearance but also contributes to its energy efficiency, with the envelope designed to improve daylight penetration while minimising heat loss, contributing to overall energy demand savings of 62% against the original building.

Throughout the recladding process, the project team, led by main contractor Skanska, worked closely with Transport for London (TfL) and the Docklands Light Railway (DLR) to ensure the works were completed safely, given the building’s proximity to these transport systems.

Delivering a Net Zero building

With sustainability a core theme, this Net Zero building is entirely electric. Eliminating reliance on fossil fuels, the design incorporates a wide range of smart-controlled energy-efficient systems, including air source heat pumps with demand-led ventilation, high efficiency lighting and PV array at roof level. This contributed to the project securing a BREEAM ‘Outstanding’ certification, together with Smartscore and WiredScore ‘Platinum’ ratings.

By retaining the original structure and reusing materials wherever possible, the project saved over 10,000 tonnes of CO2, equivalent to the emissions from 7,600 flights to Sydney or the planting of 51,300 trees. These efforts significantly reduced the building’s environmental footprint compared to a complete demolition and rebuild

Maximising user experience

In addition to structural and energy efficiency improvements, the redevelopment also focused on enhancing the workplace experience. The building’s flexible, open floor plates are designed to meet the needs of modern tenants, and features like exposed staircases with sustainable walnut flooring encourage employees to take the stairs for better health, whilst extensive outdoor spaces on nearly every floor provide areas for relaxation and collaboration.

In a further boost to amenity access, the building’s roof level features a communal event space and terrace. Elsewhere, cycle storage with dedicated changing facilities is incorporated, whilst antibacterial handrails, and UV filtration systems help ensure a safe and comfortable environment for tenants.

Richard Whitehead
Helping unlock the potential of 30 South Colonnade to deliver YY London has been an exceptional engineering experience for our team. The challenges of retaining the existing structure while increasing height and frame capacity required highly creative solutions, particularly with the marine pile foundation strengthening and reconfiguration of the building’s core. Collaboration was crucial for a successful outcome, and the project team pulled together to ensure the building met its sustainability goals whilst significantly adding to the building’s internal floor area. We’re incredibly proud of the result, which has seen the delivery of a modern, high-performance workspace, setting a new standard for sustainable office refurbishment, whilst also creating a new landmark for Canary Wharf.”

Richard Whitehead
Waterman’s Managing Director for Structures

Images © Tim Soar

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