Join this study tour of Milieu, showcasing hybrid CLT-steel design, low-carbon performance and wellness-focused workspaces that exemplify progressive office architecture, engineering ingenuity and community-integrated ground-floor activation.

Milieu, developed by HGG London, is a landmark seven-storey workplace located just off Old Street’s ‘Silicon Roundabout’. One of London’s tallest hybrid cross-laminated timber (CLT) and steel buildings, it showcases an exemplary structure-first design approach by Mary Duggan Architects, Ackroyd Lowrie and Webb Yates.

 

The hybrid superstructure delivers a refined aesthetic while achieving an embodied carbon footprint of 496 kg CO₂e/m², significantly outperforming RIBA’s 2030 target for new-build offices. High-performance MVHR systems and a triple-glazed façade further minimise operational energy use.

 

This tour offers valuable insight into progressive office design, including innovative hybrid construction; the engineering solution of T-shaped, tapered steel columns that enable the building’s dramatic cantilever; and flexible, wellness-focused workspace layouts with abundant natural light and strong indoor-outdoor connections. Visitors will also see how the ground floor integrates cultural programming through the Forefront gallery headquarters, demonstrating how contemporary workplaces can support broader community and creative engagement.

 

                NLA

                Dicle Guntas, Managing Director, HGG London

                Steve Webb, Director, Webb Yates