The practice has won a total of 30 RIBA Awards for its completed projects, as well as seventeen Civic Trust Awards, seven British Council for Offices Awards and seven environmental awards.
These are listed in full under
selected projects.

The refurbishment and renewal of the Royal Festival Hall on London's South Bank was shortlisted for the Stirling Prize in 2008.

Building Design Awards have also been won in the following categories:

Architect of the Year

2007

Masterplanning Architect of the Year

2007

Public Building Architect of the Year

2007

Office Architect of the Year

2004

Urban Regeneration Architect of the Year

2004