We also installed like-for-like replacements of the existing sash windows.

A key move internally has been to transform and optimise the core, relocating the staircase into an existing lightwell, creating a light-filled circulation route, and allowing for additional WC provision at each.

Each work floor has undergone significant but cost-effective upgrades, with contemporary new services, heating, cooling and lighting.

At the heart of the building, the new feature stair transforms the way occupants move through the space. Relocated into the former lightwell, it converts what was previously an overlooked void into an active, daylit circulation route that celebrates the building’s vertical journey. Natural light filters down through the atrium, animating the space throughout the day and encouraging movement between levels, reinforcing wellbeing, visibility and connection across the workplace. The staircase now acts as both a sculptural centrepiece and an integral part of the project’s wellness strategy.

The two new landscaped terraces provide valuable outdoor amenity and an immediate connection to nature in the heart of Marylebone. Designed as flexible breakout spaces for working, meeting or relaxation, they feature biodiverse planting, integrated seating and views across the surrounding streetscape. Together with the green roof and courtyard, the terraces contribute to a broader ecological strategy that enhances urban greening, supports local pollinators and strengthens the wider ‘Wild West End’ biodiversity corridor. These spaces create pockets of calm within the city while reinforcing the development’s environmental and wellbeing intent.