Foster Wilson Size is an award-winning architectural practice with an international reputation for the design of public buildings and creative spaces.

To each project, we bring a deep understanding of what makes creative spaces work and an ambition to help bring positive change for the communities we serve. We collaborate with our clients to help achieve their ambitions and create buildings that respond in a stimulating and positive way to their context.

We are a friendly, close-knit studio based in Hoxton, that enjoy the process of design and enjoy a challenge.

Our work ranges in scale from small community projects to large new buildings for household names. Sometimes we build from scratch but, more often than not, our work involves adapting existing and historic buildings for future use, understanding what makes a building tick before proposing alterations. We work close to home, across the country and around the globe. Running as a common thread throughout our work is the idea that better public space, underpins positive social change and improves the built environment for all.

We are an inclusive work-space that embraces diversity and runs regular work placement schemes for inner city schools to encourage wider access into the profession.

To reduce carbon emissions, our industry needs to change the way it designs and builds. We are committed to helping to make this change in the projects that we do. Our projects have been ground-breaking in the creative re-use of existing spaces and the use of natural ventilation for large performance spaces. We will continue to research and implement ways in which carbon emissions can be avoided. The practice is a signatory of the RIBA 2030 Climate Challenge and Architects Declare a Climate Emergency.

Our projects have won many awards including numerous RIBA Awards, Royal Fine Arts Building of the Year, Civic Trust, RICS and USITT Awards.


  • AEG
  • Ambassador Theatre Group
  • Arcola Theatre
  • Barbican
  • Carnival Village
  • Eventim Live
  • Everyman Cheltenham
  • Hoxton Hall
  • King's Lynn & West Norfolk Borough Council
  • Live Nation
  • Ovalhouse
  • Polka Childrens' Theatre
  • Salisbury Playhouse
  • Trafalgar Entertainment Group
  • Tricycle Theatre
  • Abingdon School
  • The American School in London
  • Barking College
  • Bedford School
  • Berkshire Young Musicians Trust
  • Cheltenham Ladies’ College
  • Child’s Hill School
  • City of Westimister College
  • Dulwich College
  • Highgate School
  • Kingston College
  • Kingsmead School
  • Queen Mary University of London
  • Royal Holloway University of London
  • Royal Society of Arts
  • Russian Ballet School
  • St Paul’s Boys School
  • St. James Theatre (now The Other Palace)
  • Trinity College of Music
  • Wigan and Leigh College
  • Grosvenor
  • Opticrealm
  • Livity