- Camden LEA
- Camelot Property Group
- Cameron Taylor Bedford
- Capita Beard Dove
- The National Trust
- City Of London
- Carter Jonas LLP
- Abbott International plc
- ACCL Ltd
- Essex County Council
- Allington Associates Ltd
- Amadeus (Colchester) Ltd
- Ryder Street Properties Ltd
- S.D.P.S. Architects
- E-Shelter
- Willmott Dixon
- Writtle Agricultural College
- WSP Civils Ltd
- Ankur Architects
- Annabel Brown Architects
- Arcademy Limited
- Diss Council
- Arcady Architects Limited
- ARCS Environmental Ltd
- Ardent Consulting Engineers Ltd
- Ashe Construction Limited
- Aspinal London Limited
- Atkins
- B & B Belgravia Limited
- Bellhouse Properties
- AK Design Partnership LLP
- Knight Group
- AllenBuild Limited
- Allgood plc
- Bexley Council
- BHN Pot Plants
- Brennan Group
- Brentwood Borough Council
- British Transport Police
- CEA Islington
- Ringway Roadstone
- Charles Tashima Architects
- Chelmsford Borough Council
- Chemicode Engineering Ltd
- CHPK Limited
- Christine Levine Architects
- Dover Street Investments Ltd
- DRF Consulting Limited
- Dudley Smith Partnership
- Durkan Group
- EDAW Plc
- Erinaceous Group plc
- Essex County Council
- Essex Job Shop
- Fanpac Limited
- Farnborough College
- Flood Search UK Ltd
- Foundation Architecture Ltd
- Uxbridge AC
- Frontline Data Ltd
- Garland Cornelius Architects
- Clarence Estates (London) Ltd
- Clear Route Utility Services Ltd
- Colvin Interiors
- Corporate Edge
- David Rea Architects
- Southend Borough Council
- Dean & Dyball Construction
- Dearle & Henderson
- Denton Associates
- Gelder and Kitchen
- Genesis Housing Group
- Harlow District Council
- Historic Royal Palaces
- London Borough of Enfield
- London Borough of Havering
- London Borough of Islington
- London Borough of Lewisham
- London Borough of Waltham
- London Borough of Wandsworth
- LSA Projects Ltd
- LTG Development Corporation
- Martin Davison Associates
- Michael Barclay Partnership
- Monument Design Associates Ltd
- Morley Riches & Ablewhite
- Mouchel Essex
- MSA Design Ltd
- Newell Properties Ltd
- Nigel S Chapman Associates
- North Hertfordshire Council
- NPS Property Consultants Ltd
- Orme Retail
- P6UK Limited
- Pacific Interiors
- Pinewood Studios Ltd
- Amaryllis Group Holdings Ltd
- White Design Associates
- Whybrow Chartered Surveyors
- QEII Conference Centre
- Quantech Environmental Ltd
- Rock Investment Holdings plc
- Roger Stagg Associates
- Rosemont Architecture
- Royal Borough of Kingston
- PMP Architects Ltd
- Port of Tilbury London Ltd
- Proctor & Gamble
- Purcell Miller Tritton
- Pythagoras
- Savell Bird & Axon
- Scarborough Development Grp plc
- Skanska Integrated Projects
- Smith Wren Herbert Partnership
- Sprunt Ltd
- Square Deal Units (Argyle) Ltd
- Stanref International plc
- TDG plc
- John Finch Partnership
- John Swire & Sons Limited
- Kemsley Whiteley & Ferris
- KLH Architects
- KMK Consultants Limited
- Knight Frank LLP
- Lancaster plc
- Lanes Group Plc
- LAP Architects Ltd
- Laurie Wood Architects
- Tesco Stores plc
- Thamesmead Properties Ltd
- The Learning Trust
- Thurrock Council
- Tiscali UK Ltd
- Trident Building Consultancy
- W S Atkins Consultants Ltd
- Wates Construction Ltd
- Weston Homes plc
- Haverstock Associates
- Heap and Digby
- Higgins Construction plc
- Hilltop Infants School
- HM Prison Service
- Kalyx Serices
- Horizon Housing Group
- Hutley Investments Ltd
- In Property
- Inkpen Downie Architects
- ISG Dean and Bowes Ltd
- Jackson Group plc
- London & Quadrant HT
- Associated Continental Architects
- London Borough of Barnet
- London Borough of Croydon