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