- 4466 Architects
- Adur and Worthing Councils
- Altair Services
- Amicus Horizon
- Arbora Homes
- Arbrook Land
- Archer Building Consultancy Ltd
- Ashford Borough Council
- Astrea Asset Management
- Avamore Capital Ltd
- Aviva Investors
- Barley Homes
- Barratt London
- Basildon Council
- Be First
- Berkeley Homes
- Birket Long Solicitors
- BLG Development Finance
- BP
- BPTW
- Braintree District Council
- Breckland Bridge Limited
- Brighton and Hove City Council
- Cambridge City Council
- Catalyst Housing Group
- CBRE
- Chelmer Housing Partnership
- City of London Corporation
- City Of Westminster
- City YMCA
- City, University of London
- Clarion Housing Group
- Close Property Finance Ltd
- Colliers
- Colne Housing Association
- Commercial Acceptances
- Consulco
- Cosmur
- Crawley Borough Council
- Dacorum Borough Council
- Dartford Borough Council
- Downing LLP
- Ducane Housing Association
- Dukelease Properties Ltd
- English Rural Housing Association
- Essex County Council
- Essex County Fire and Rescue
- European Space Agency
- Evolve Housing
- Folgate Estates Limited
- Frimley Health NHS Foundation Trust
- Fulham Palace Trust
- Gateway Housing Association
- Gravesham Borough Council
- Greenway Architects
- Guildmore Ltd
- Hampshire Trust Bank
- Harrow Council
- Hastoe Housing Association Ltd
- HAT Architects
- Hatfields Furnishings Ltd
- Hazel McCormack Young
- Hexagon Housing Association
- Home Group
- Howard De Walden Estate
- Hyde Housing Association Ltd
- Imperial College London
- Indian YMCA
- Inkpen Downie
- Ipswich Borough Council
- IQ Student Accommodation
- Latimer Homes
- Legal and General
- Lendinvest
- Lewisham Homes
- Littlegarth School
- LOM Architecture and Design
- London & Quadrant
- London Borough of Barking & Dagenham
- London Borough of Ealing
- London Borough Of Greenwich
- London Borough of Hackney
- London Borough of Haringey
- London Borough of Lewisham
- London Borough of Southwark
- London Borough of Tower Hamlets
- London Borough of Wandsworth
- London Borough of Waltham Forest
- Metropolitan Thames Valley Housing
- Mid-Suffolk District Council
- Montello Development Finance Partners Limited
- Morley Riches & Abelwhite
- Mount Green
- Mulalley and Company
- Munday + Cramer
- Naked House
- Network Homes
- Notcutts Garden Centres
- Notting Hill Genesis Group
- Octavia Housing
- One Housing Group
- Optivo
- Orwell Housing Association
- Paradigm HA
- Peabody Housing Trust
- Pension Insurance Corporation (PIC)
- Peregrine Bryant
- Phoenix Community Housing
- Pick Everard
- Poplar Harca
- Portman Estate
- PPR Estates
- Purcell
- Queen Mary University of London
- Redloft
- Redrow Homes LTD
- Reigate and Banstead District Council
- Restoration London Group
- Russet Homes
- Rutland Group Limited
- Sage Housing
- Samaritans
- Sapphire Independent Housing
- Secure Trust Bank
- Sempra Homes
- Shearer Property Group
- Sherrygreen Homes
- Soho Homes
- Southern Housing Group
- Surrey County Council
- Swan Housing Association
- Thanet District Council
- The Hospital of St Cross & Almshouse of Noble Poverty
- Thurrock Council
- Town and Country Housing Group
- Turnbull & Asser
- UCLH
- United Living
- United Trust Bank
- University College London
- University of Essex
- V7 Asset Management
- Volvox (MS) Ltd
- Waltham Forest
- Wandle Housing Association
- Waterman Group Plc
- Wates
- Watford Borough Council
- Watford Community Housing Trust
- Welwyn Hatfield CHT
- Welwyn Hatfield Council
- West Kent Housing Association
- Wickford Development Limited
- Wynne Williams Association Ltd
- Zurich