Sellar are working together with RPS (Planning Consultants), 6a (Architects) and Djao Rakitine (Landscape Architect) to deliver the redevelopment of Grand Union House.



Sellar is an award-winning property developer with a reputation for delivering innovative and high-quality mixed-use projects that champion design, wellbeing and sustainability, challenging conventional approaches to design and place making to create places for a better tomorrow. Sellar works across a range of project sizes and with teams that share its philosophy.

Sellar is renowned for conceiving and delivering the internationally recognised Shard Quarter development, in the borough of Southwark, including London’s tallest building, The Shard, and is currently delivering a range of cutting-edge regeneration projects across central London including Paddington Square and Canada Water Docks. 



RPS is a global environmental and property consultancy. We define, design and manage projects that create shared value to a complex, urbanising and resource-scarce world. The planning team provides specialist consultancy advice on projects across London and the south east, including major regenerations, sensitive in-fill sites and heritage assets.



6a architects was founded by Tom Emerson and Stephanie Macdonald in 2001. The practice has gained an international reputation for award winning housing, cultural, educational and mixed-use projects. Working internationally, projects often coalesce the historical and contemporary narratives of their sites. Sometimes described as architect detectives, 6a finds meaningful connections to climate, history and cultural conditions. Drawing on social history, construction traditions and contemporary art and fashion, projects emerge firmly rooted in their place.

The practice is currently working on significant projects around the world. New projects under construction include a new gallery in New York and two new office buildings for the Greenwich design district, London. Victoria State Government’s Minister for Planning has also just granted permission for 6a’s first building in Australia, Walk up City is a 13-storey mixed use landscaped building in Collingwood, Melbourne due to start on site in 2021. 6a architects is published extensively and internationally. In 2020, the influential Italian magazine, Domus, included 6a in the 50 Best Architects in the world today.


Djao-Rakitine is a landscape architecture practice based in London and Paris, working on high profile public and private cultural, commercial and residential projects worldwide. 

The studio develops various scales of design, from product design to master planning. On all scales, natural, cultural and economic aspects of the project are fundamental. Djao-Rakitine’s design approach focuses on revealing the potential of each site through their characteristics. 

Concept and meaning, functionality and use, form and aesthetics are key drivers of its design process. As part of the functional aspect of the project, Djao-Rakitine believes that landscape architecture can act as an ecological infrastructure. Projects developed aim at adapting to climate change and creating a friendly, rich and sustainable environment, including managing rainwater and improving biodiversity.