| AA Projects Ltd |
| Academy Consulting Solutions Limited |
| Acorn Management Services Ltd |
| Adept Management Limited |
| Advisian Limited |
| Ailsa TH Ltd |
| Affinity Water |
| Aker Solutions Limited |
| Alligan Ltd |
| Alstom Transport UK Limited |
| Altran UK Ltd |
| AMR Consult Ltd |
| Anglia Ruskin University |
| Apache North Sea Ltd |
| APM Group Limited |
| APS Chartered Surveyors |
| Aravun Limited |
| Arden University |
| Aspire Europe Limited |
| Atlantic Management Centre International Ltd |
| Atlantic Project Consultants Limited |
| Attric Limited |
| Axiom Project Management Limited |
| Baily Garner LLP |
| Balmoral Offshore Engineering |
| Bechtel |
| Bibby Financial Services |
| Birmingham City University |
| BKAsiaPacific (Hong Kong) Limited |
| Blackpool and The Fylde College |
| Blackstone Property Management |
| Blueprint Project Solutions Ltd |
| BOC Ltd |
| Bournemouth University |
| BPP University |
| Bristol Water PLC |
| British Airways Plc |
| Centrica (British Gas) |
| British Sugar Plc |
| British Transport Police |
| Building Design Partnership |
| Business Improvement & Projects Unit - University of Kent |
| Calfordseaden LLP |
| Cambridge English |
| Canterbury Christ Church University |
| Capita Business Services Limited |
| Capital Property & Construction Consultants Limited |
| Card Protection Plan |
| Cardiff Metropolitan University |
| Castle Owen Construction and Property Consultants Limited |
| Catalyst Land Solutions Ltd |
| Cavenagh |
| CBRE Corporate Outsourcing Ltd |
| CCG (Scotland) Ltd |
| CGI IT UK Ltd |
| Chalcroft |
| Chartered Society of Physiotherapy (CSP) |
| Chaucer Group Ltd |
| City Change Management Ltd (CCM) |
| City of London Corporation |
| CityFibre Holdings Limited |
| CJ Associates |
| Clarkson Alliance |
| Close UK |
| CLP Holdings Limited |
| CMC Partnership (UK) Ltd |
| CMS Construction Consultants Ltd |
| Concerto Partners LLP |
| Cork Institute of Technology |
| Corporate Project Solutions |
| Costain Group Plc |
| Courtney Michael Partnership Nigeria Limited |
| Coventry University |
| Cranfield University |
| Cumbria Partnership NHS Foundation Trust |
| Currie & Brown (CI) Limited |
| DAP Projects |
| Decision Analysis Services Ltd |
| Delt Shared Services |
| De Montfort University |
| Department for Business Energy and Industrial Strategy (BEIS) |
| Department for International Development |
| Diamond Light Source |
| Driver and Vehicle Standards Agency (DVSA) |
| Durham County Council |
| E and H Consulting Ltd |
| East of England NHS Collaborative Procurement Hub |
| East Riding Of Yorkshire Council |
| Edge Hill University |
| Edge Property Solutions |
| Edison Personal Development Ltd |
| Edmond Shipway LLP |
| Elekta Limited |
| Elexon Ltd |
| Energy Saving Trust |
| E.ON UK |
| ERMC Limited |
| Essentia |
| Essex County Council - Delivery and Service Design |
| Evolution5 Limited |
| Exelin Ltd |
| Expro North Sea Limited |
| F3DEVELOP Limited |
| Ferrovial Agroman (UK) Ltd |
| Firewood Ltd |
| Firstco Ltd |
| Food Standards Agency |
| Forestry Commission |
| ForgeTrack Ltd |
| Foster & Partners |
| FOUR Group Limited |
| Fraser Randall Ltd |
| Fugro |
| Fusion For Energy |
| Future Cities Catapult |
| Gartner UK Ltd |
| Gate One |
| GKN Aerospace Services Ltd |
| Glasgow Caledonian University |
| Glaxo Smith Kline |
| Griffiths Waite Ltd |
| GSM Association |
| Gutteridge Haskins and Davey (GHD) |
| Harmonic Limited |
| Havelock AHI |
| Heriot Watt University |
| Hewitt Freeborn Associates |
| Hexagon Safety & Infrastructure |
| Hitachi Capital (UK) PLC |
| HM Government Communications Centre (HMGCC) |
| HM Land Registry |
| Houses of Parliament |
| Hyde Park Solutions Limited |
| Hydro Systems UK Ltd |
| Imtech Technical Services Ltd |
| In Touch Consultants Ltd |
| Industrial Technology Systems Ltd |
| Inside Out Developments Ltd |
| Institute of Development Studies |
| Intergraph UK Ltd |
| International Nuclear Services Ltd |
| JB Projects Yorkshire Limited |
| JAC Design & Project Management |
| Jaguar Building Services |
| JISC |
| John Lewis |
| K2 Consultancy Ltd |
| Kendall Kingscott Ltd |
| Keystone Project Management Co Ltd |
| Khalifa A Algosaibi Diving & Marine Technical Services Company |
| Kier Workplace Services (KWS) |
| Kilmurn PPS Ltd |
| Kingston Business School |
| Knorr-Bremse Rail Systems (UK) Limited |
| KPMG LLP |
| Kuka Systems UK |
| L-3 Communications ASA Limited |
| L-3 Communications MSUK Ltd |
| L-3 TRL Technology |
| Lah Consultants |
| Lean Construction International |
| Leeds Beckett University |
| Leicestershire County Council |
| Leonardo MW Ltd |
| Linklaters |
| Liverpool John Moores University |
| Llandrillo College / Coleg Llandrillo |
| Lloyd's Register |
| LogiKal |
| Logistex |
| London Borough of Brent |
| London Chamber of Commerce and Industry (LCCI) |
| London Fire Commissioner (LFC) |
| London Graduate School (LGS UK) |
| London South Bank University |
| Loughborough University |
| MAC Construction Consultants |
| Malcolm Hollis LLP |
| Management Process Systems Ltd |
| Manchester Metropolitan University Business School |
| Manchester Metropolitan University School of Engineering |
| Mascot Management Ltd |
| Mass Consultants Ltd |
| McCarthy & Stone Plc |
| McLaren Technology Group |
| Medway Council |
| Meinhardt Consulting Engineers |
| Midmac Contracting |
| Morses Club Limited |
| MRL Public Sector Consultants |
| myProteus |
| Nanyang Technological University |
| National Composites Centre - NCC |
| National House Building Council (NHBC) |
| National Nuclear Laboratory |
| National Skills Academy Nuclear |
| N-ergy Limited |
| Networkers |
| NFU Mutual Insurance Society |
| NIS Limited |
| Nomad Foods Europe Limited |
| Norfolk Community Health & Care NHS Trust |
| Northmore Associates |
| Northumbrian Water Ltd |
| Nottingham Trent University |
| Nuvia Ltd |
| Oander Limited |
| Oceaneering International Services Ltd |
| Offshore Consulting (Guernsey) Ltd |
| OFGEM |
| On Line Design & Engineering Limited |
| Orano Projects Limited |
| Oxford Brookes University |
| P2 Consulting |
| Padstone Consulting Ltd |
| Parkwood Project Management |
| PDSI Group |
| Pearson Vue |
| Peter Marsh Consulting Limited |
| Pick Everard |
| Planancy Ltd |
| Plowman Craven |
| Plymouth University |
| Polaris Consulting Limited |
| Prima Uno Limited |
| Program Framework |
| Project & Building Consultancy |
| Project Leaders Ltd |
| Project Plus Ltd |
| Projection (HK) Ltd |
| PricewaterhouseCoopers LLP (UK) |
| Promag PVT Ltd |
| Prospects Services |
| Public Health Wales |
| QBE |
| Rail Safety and Standards Board (RSSB) |
| Recom Solutions |
| Redflex Traffic Systems Limited |
| Rekan Limited |
| Renishaw |
| Resource Solutions Group (RSG) |
| Reykjavik University |
| Ricardo Plc |
| Ricardo Rail Limited |
| Rider Levett Bucknall (UK) |
| Rise Management Consulting Limited |
| Robert Gordon University |
| Roke Manor Research Limited |
| Royal Haskoning DHV |
| Royale Oceanic International Limited |
| RPA Group |
| RSK Environment Limited |
| RSL Project Solutions Ltd |
| RSM UK Consulting LLP |
| Rubric Europe Limited |
| Safran Nacelles Ltd |
| Said Business School Limited |
| Schofield Lothian Limited |
| Science & Technology Facilities Council |
| Scotland Excel |
| Scottish Enterprise |
| Secure Trust Bank Plc |
| Serco Group Plc |
| SGM Management & Design Limited |
| SKEMA |
| Skills Development Scotland |
| Smiths Detection |
| South Gloucestershire Council Environment and Community Services |
| Southampton City Council |
| Solent University |
| Sopra Steria |
| Southeastern Railways |
| SSAT (The Schools Network) Ltd |
| Stace LLP |
| Starris Projects Ltd |
| Stoneseed Ltd |
| Strathclyde Partnership for Transport (SPT) |
| STS Defence (ES) |
| Sunderland University |
| Surrey Satellite Technology Ltd (SSTL) |
| Swansea University |
| Sweco |
| Swindon Interiors LLP |
| Synapse Research Management Partners S.L |
| Systems Engineering & Assessment Ltd |
| T Sumner Smith Ltd |
| Talent Vectia |
| TATA Global Beverages |
| Taylor Wimpey UK Ltd |
| Temple Group Limited |
| The British University in Dubai |
| The Coal Authority |
| The Grangeside Group Limited |
| The National Audit Office |
| The Sheffield University Management School |
| The University of Manchester |
| Thomas & Adamson |
| Tony Gee & Partners LLP |
| Translink |
| Transport for NSW |
| Transport for London (TFL) |
| Trident Building Consultancy Ltd |
| Tritec Marine Limited |
| UK Fuels Limited |
| Ultra Electronics Command & Control Systems |
| Underwood Carpenter Limited |
| University College London |
| University of Aberdeen |
| University of Auckland |
| University of Bedfordshire |
| University of Birmingham |
| University of Cambridge |
| University of Central Lancashire |
| University of Cumbria |
| University of East Anglia |
| University of East London |
| University of Edinburgh |
| University of Hertfordshire |
| University of Leeds |
| University of Limerick |
| University of London |
| University of Northampton |
| University of Portsmouth |
| University of Reading |
| University of Roehampton |
| University of Salford |
| University of South Wales |
| University Of Southampton |
| University of Sussex |
| University of the West of Scotland |
| University of Warwick |
| University of Westminster |
| University of Winchester |
| Utiligrid Limited |
| Veale Wasbrough Vizards LLP |
| Vear Building Services Ltd |
| Virgin Media |
| Vitruvius Management Services Ltd |
| Volkerrail Group Ltd |
| Volkswagen Financial Services |
| Walgreens Boots Alliance |
| Walker Construction Consultants (previously Management) |
| Wellingtone Ltd |
| Welsh Government - Commercial and Programme & Project Management |
| West Midlands Combined Authority |
| Westminster City Council |
| William Grant & Sons Limited |
| WM Saunders Partnership LLP |
| WMG |
| WNY |
| Wood Group UK Ltd |
| Woodbrick & Castle |
| WorleyParsons Services UK Ltd |
| WYG Management Services Ltd |
| Xacom Project Controls |
| XPO Logistics |
| York St John University |
| Yorkshire Building Society |
