| Accenture | Fujitsu | Paragon Banking Group |
| ACT Training | FUTURE INDUSTRIAL SERVICES LIMITED | Pawprint |
| Addo Food Group | Futures Housing Group | Pennon Group |
| ADI Group | Gamesys Group | PepsiCo UK and Ireland |
| AEGON (UK) | General Medical Council | Pfizer |
| AF Blakemore & Son Ltd | Gilbert-Ash Limited | Phoenix Group |
| Aldi UK & Ireland | Glasgow Caledonian University | PIMCO Europe |
| Allianz (UK) | GlaxoSmithKline | Pinsent Masons LLP |
| Amazon | Glen Dimplex Home Appliances | Platinum Facilities & Maintenance Services Limited |
| Amey | Glenmorangie Company | Post Office |
| Anglian Water Group | Goldman Sachs International | Premier Oil |
| Anglo American | Google | Principality Building Society |
| Anthesis Consulting Group plc | Gower College Swansea | Project One Consulting Limited |
| Arm | Gowling WLG (Wragge) | Public Health England |
| Arup | Graham | PwC |
| ASDA Stores Ltd | Grant Thornton | QuestGates |
| Associated British Foods | Grayce | Quintessential Brands |
| Association of Accounting Technicians | Greggs | Reckitt Benckiser |
| Assurant | Gresham Technologies plc | Record Currency Management |
| AstraZeneca | Greys Matter Ltd | Reward Gateway |
| Audit Scotland | Gymshark Limited | RHA Wales |
| Autotrader | Hachette UK | Ricardo |
| AVIVA PLC | Heathrow Airport Limited | Ricoh UK |
| AWE | Henry Boot plc | Robertson Group |
| AXA | Herbalife Nutrition | Roche Products Ltd |
| AXIS Capital Holdings | Heron Bros Ltd | Rolls-Royce |
| Bain & Company | HGF Ltd. | Royal London Group |
| Bank of America | Higgs LLP | ROYAL MAIL GROUP LIMITED |
| Barclays | High Speed 2 Limited | Ryder Architecture Ltd |
| BASF plc | Hiscox UK | Sage plc |
| BBC | HM Revenue and Customs | Salesforce.com |
| BCS Consulting | Hodge Group | Samworth Brothers (Holdings) |
| Beaverbrooks the Jewellers | Hogan Lovells International LLP | Santander UK |
| Bentley Motors Limited | Home Instead Senior Care | SC Johnson |
| Bettys & Taylors Group Ltd | Homeserve | ScotRail |
| BigChange | Houses of Parliament Restoration and Renewal | Scottish Qualifications Authority |
| Birmingham City Council | HSB Engineering Insurance | Scottish Water |
| Bishop Fleming | HSBC Bank | Secure Trust Bank |
| Blackpool Football Club Ltd | Huddersfield Business School, University of Huddersfield | Sedgwick |
| Blaser Mills LLP | Hutchinson 3G UK (Three) | Serco |
| Bluestone National Park Resort | IBM UK | Severn Trent |
| BMG Music Publishing | Iceland Foods Ltd. | Shakespeare Martineau LLP |
| BNP Paribas | Innovate Trust | Sheffield Hallam University |
| Bowmer & Kirkland | InterContinental Hotels Group | Shell UK |
| bp | Irwin Mitchell | Shoosmiths LLP |
| Brewin Dolphin Holdings | ISS UK | SHS Group Ltd |
| Bristol Airport | J Sainsbury | Siemens PLC |
| Brit Insurance Holdings | J. Murphy & Sons Limited | Simply Health Access |
| BritainThinks | Jacobs | Simplyhealth Group |
| British Airways | Jaguar Land Rover | Sinclair Group |
| British Land | JC Decaux | Sky |
| Brother Industries UK (Wales) | Jehu Group | Societe Generale |
| Browne Jacobson LLP | JLL | Sodexo |
| BT | John Lewis Partnership/Waitrose | Solenis |
| Bupa | Johnson Service Group | South Wales Police |
| Burger King | Joseph Rowntree Foundation | Sovereign Housing Association |
| Burges Salmon | JTI | Sport England |
| CALA GROUP LIMITED | Keenan Recycling Ltd | SPTS Technologies |
| CalMac Ferries Ltd | KFC (Great Britain) Ltd | St James's Place |
| Calor Gas Ltd | Kier Group | Standard Chartered |
| CanPack Group | Kingspan Group | Stantec |
| Capgemini | Knight Frank | Swansea Building Society |
| Capita Group | KPMG | TalkTalk Telecom Group plc |
| Capital One | Landmarc Support Services Limited | TAQA Bratani Limited |
| Capsticks Solicitors | Leeds Building Society | Teesside University |
| Cardiff and Vale College | Legal & General Group Plc | Teleperformance |
| Cardiff Business School | Lewis Silkin | Teneo |
| Cardiff Metropolitan University | LexisNexis Risk Solutions | TESCO PLC |
| Castell Howell Foods | Linc-Cymru Housing Association | Thales Group |
| Central England Co-operative | Lincolnshire Co-operative | Thames Water |
| Centrica | Linklaters | The Co-operative |
| Checkout | Liverpool John Moores University | The Crown Estate |
| CHEP | Liverpool Victoria General Insurance | The Eden Project |
| Chevron U.K. Ltd | Livewest Homes Limited | The Football Association (FA) |
| Cisco | Livin Housing Ltd | The Go-Ahead Group |
| CITB | Lloyds Banking Group | The Midcounties Co-operative |
| CITIZEN Housing | LNER | The Scottish Salmon Company Ltd |
| City & Guilds Group | Local Government and Social Care Ombudsman (LGO) | The Southern Co-op |
| CityFibre | London Borough of Barking and Dagenham | The University of Birmingham |
| Cleone Foods | London Stock Exchange Group | Tideway |
| CMS Cameron McKenna Nabarro Olswang LLP | Longevity Partners | Timpson Ltd |
| CNOOC International | L'Oreal Group UK | TJX Europe (TK Maxx) |
| Columbia Threadneedle Investments | Manchester Airports Group | TLT LLP |
| Company Shop Group | Marks & Spencer | Toyota Motor Manufacturing (UK) |
| Cooley LLP | Marsh | Transport for the West Midlands |
| Costain Group | Mayborn Group | TransUnion |
| Covéa Insurance | McCann Worldgroup | Tribal Group |
| Coventry & Warwickshire Champions | McKinsey | Trivallis Ltd |
| Coventry Building Society | Mercer Limited | TSB Bank plc |
| Crown Estate Scotland | Microsoft | UBS |
| Crown Workspace Limited | Monmouthshire Building Society | UK Greetings Ltd. |
| Currys | Morgan Sindall Construction & Infrastructure LTD | Unilever |
| Deloitte LLP | Morgan Stanley | Unipart Group |
| Department for Transport | MSS Group | Unite Students |
| Derwent London | MTR Elizabeth line | United Utilities |
| Development Bank of Wales | MVF Global | University of Hull, Faculty of Business, Law and Politics |
| Diageo | MWH Treatment Ltd | University of Leeds |
| Direct Line Group | National Grid | University of Manchester |
| Dolmans Solicitors | Nationwide | University of South Wales |
| Drax Group PLC | NATS | University of Warwick |
| DWF LLP | NatWest Group | Unum |
| Dwr Cymru Welsh Water | NCC Group | UPS Ltd |
| East Midlands Railway | Network Rail | V12 Retail Finance |
| easyJet | Network Recruitment Wales Ltd | Veolia |
| EcoAct | Newcastle Building Society | Verizon UK Limited |
| EDF Energy | Newcastle Business School | Vertex |
| Educ8 Training | Nexba | Via East Midlands |
| Efficiency North Holdings Ltd | Next PLC | Victrex plc |
| Eigen Technologies Inc | NFU Mutual Insurance Co | VMware UK Limited |
| Electricity North West Ltd | Nike (UK) | VVB Engineering |
| EMCOR (UK) | nmcn PLC | Wales & West Utilities Ltd |
| Encirc | Noble Foods | Walgreens Boots Alliance |
| Enterprise Rent-A-Car | Nominet | Watts Truck & Van |
| EQUANS UK & Ireland | North Star Housing Group | Wells Fargo |
| Equinix | Northern Gas Networks | Wesleyan Assurance Society |
| Esken Ltd | Northumbria University | Westmorland |
| Essentra PLC | Northumbrian Water Group | Whyte & MacKay |
| Eurovia UK Ltd | Norton Rose Fulbright | WildHearts |
| Eversheds Sutherland | Nottingham Trent University | Wincanton |
| Facebook Inc | Nottingham University Business School | WJ Group |
| Federated Hermes | Novus Property Solutions | Wm. Morrison Supermarkets PLC |
| Financial Services Compensation Scheme | NPTC Group of Colleges | Worldline |
| Finning Group (UK) | NRS Healthcare | Worley |
| Fitch Ratings Ltd | Office for National Statistics | Wright, Johnston & Mackenzie LLP |
| Ford | One Stop Stores Ltd | YMCA St Pauls Group |
| Freesat (UK) Limited | Oracle Corporation UK | Yorkshire Building Society |
| Freshfields Bruckhaus Deringer | Orbit Group Ltd | Zimmer Biomet UK Ltd |
