| ENBW GENERATION UK LIMITED | London | A rating |
| EnSilica | Abingdon | A rating |
| Enzen Global Limited | Solihull | A rating |
| EPIC Private Equity LLP | London | A rating |
| Equinor UK Limited | London | A rating |
| Ernst & Young | London | A rating |
| Essar Oil (UK) Ltd t/a EET Fuels | Ellesmere Port | A rating |
| Essendi UK Hotels 1 Limited | London | A rating |
| Essentra plc | Milton Keynes | A rating |
| ESSO Petroleum Company Ltd | Leatherhead | A rating |
| EthosEnergy GBR Ltd | Aberdeen | A rating |
| Eurac Poole Ltd | Poole | A rating |
| Eurowind Energy Limited | Glasgow | A rating |
| Eversheds Sutherland (International) LLP | Birmingham | A rating |
| EXPERIAN LIMITED | Nottingham | A rating |
| Expro North Sea Ltd | Aberdeen | A rating |
| EYOS UK Limited | Alton | A rating |
| F-M Motorparts Limited | Manchester | A rating |
| Farrel Limited | Rochdale | A rating |
| Faurecia | Lichfield | A rating |
| Fayat Lifting Ltd | London | A rating |
| FCC Construccion SA UK Branch | London | A rating |
| Federal-Mogul Ltd | Manchester | A rating |
| Ferrovial Construction UK Ltd | London | A rating |
| Fibre Technology Limited | Pinxton, Nottingham. | A rating |
| Firmenich UK Ltd | Southall | A rating |
| FirstRand Bank Ltd (London Branch) | London | A rating |
| FitzWalter Capital Limited | London | A rating |
| Fluor Limited | Farnborough | A rating |
| Flying Point Management UK Ltd. | Reading | A rating |
| FMC Technologies Ltd | Dunfermline | A rating |
| Folio3 Software UK | Woking | A rating |
| Forage UK Operations Limited | London | A rating |
| Ford Motor Company Limited | Essex | A rating |
| Formech International Ltd | Harpenden | A rating |
| Forvis Mazars LLP | London | A rating |
| FremantleMedia Group Limited | london | A rating |
| Fuelcomm UK Limited | London | A rating |
| FUNDING CIRCLE LTD | LONDON | A rating |
| Futaba Manufacturing UK Ltd | Burnley | A rating |
| Gardline Marine Sciences Limited | Great Yarmouth | A rating |
| Garrigues UK LLP | London | A rating |
| GE Aviation Systems Limited | Cheltenham | A rating |
| GE Vernova International LLC | Leeds | A rating |
| GEA Refrigeration UK Ltd | Sittingbourne | A rating |
| General HVAC Solutions UK Ltd | Elstree | A rating |
| GEZE UK Ltd | Lichfield | A rating |
| GIG Facades Ltd | London | A rating |
| GIVAUDAN UK LTD | ASHFORD | A rating |
| GKN Aerospace Service - Cowes | Cowes | A rating |
| GKN Aerospace Services - Filton | Bristol | A rating |
| GKN Aerospace Services Limited | Birmingham | A rating |
| Gleeds LLP | London | A rating |
| Global Fashion Group UK Services Limited | London | A rating |
| Global Stone (Colchester) Ltd | Colchester | A rating |
| GMV NSL Limited | Nottingham | A rating |
| GN AUDIO UK Limited | Langley | A rating |
| GN Hearing UK LTD | Bicester | A rating |
| Goldbeck Construction Ltd | Birmingham | A rating |
| Goldman Sachs International | London | A rating |
| Gomez-Acebo & Pombo Abogados SL | London | A rating |
| GP ACOUSTICS (UK) LIMITED | IPSWICH | A rating |
| Grocery Delivery E-services UK Ltd | London | A rating |
| Groupe SEB UK Ltd | Slough | A rating |
| Guhring Limited | Birmingham | A rating |
| Gurit UK Ltd | Newport | A rating |
| H & M Hennes & Mauritz UK Ltd | London | A rating |
| H J Heinz Co Ltd | London | A rating |
| H&E Engineering Limited | Bridgwater | A rating |
| H&MV Engineering Services Ltd | Altrincham | A rating |
| Halliburton Manufacturing and Services Ltd | London | A rating |
| Halma Plc | Amersham | A rating |
| Handmade Cake Co Ltd | Maidenhead | A rating |
| Hare & Humphreys Ltd | LONDON | A rating |
| Haskoning UK Ltd | Peterborough | A rating |
| Hay Technology Limited | London | A rating |
| HCC Service Company Inc | London | A rating |
| HCD Economics limited | Knutsford | A rating |
| Heineken UK Limited | Edinburgh | A rating |
| Helio Consulting Ltd | Oxford | A rating |
| Hengeler Mueller Partnerschaft von Rechtsanwaelten mbB | London | A rating |
| Hensel Recycling (UK) Ltd | Dunsfold | A rating |
| Herbert Engineering Europe (UK) Ltd. | Glasgow | A rating |
| Herbert Smith Freehills Kramer LLP | London | A rating |
| Herrenknecht International Ltd | Sunderland | A rating |
| Highly Marelli UK Limited | Sunderland | A rating |
| Hill Dickinson Business Services Limited | Liverpool | A rating |
| Hilti (Gt. Britain) Limited | Manchester | A rating |
| Hilton UK Hotels Limited | Watford | A rating |
| HISCOX UNDERWRITING GROUP SERVICES LIMITED | London | A rating |
| Hispania Global UW Ltd | London | A rating |
| Hitachi Capital (UK) PLC | Staines-upon-Thames | A rating |
| Hitachi Construction Machinery (UK) Limited | Hebburn | A rating |
| HITACHI ENERGY UK LIMITED | Birmingham | A rating |
| Hitachi Solutions Europe Ltd | London | A rating |
| Hogan Lovells International LLP | London | A rating |
| HORIBA UK Limited | Northampton | A rating |
| HOTPOINT UK APPLIANCES LIMITED | Peterborough | A rating |
| Houthoff London BV | London | A rating |
| HSBC Holdings plc | London | A (Premium) |
| Hytera Communications (UK) Co., Ltd | Slough | A rating |
| Ideal Boilers Ltd | Hull | A rating |
| IDOM (UK) LTD | London | A rating |
| Idverde Limited | Coventry | A rating |
| Imagino | London | A rating |
| IMD Technologies Ltd | London | A rating |
| IMI Plc | Birmingham | A rating |
| Immediate Media Company Limited | London | A rating |
| Imperial Chemical Industries Limited (Trading as ICI Paints AkzoNobel) | Slough | A rating |
| Incopro Limited | London | A rating |
| Industrial Design Consultancy Ltd | Datchet | A rating |
| ING Services Limited | London | A rating |
| InspireXT Consulting Ltd | London | A rating |
| International Paint Limited | Gateshead | A rating |
| Invenics Services Ltd | London | A rating |
| Investec Bank PLC | London | A rating |
| IP Global Properties Limited | London | A rating |
| ITW Construction Products - Division of ITW Limited | Glenrothes | A rating |
| Jacobs UK Ltd | Wokingham | A rating |
| Jaguar Land Rover Limited | Coventry | A rating |
| Janssen-Cilag Ltd | High Wycombe | A rating |
| Japan Bank for International Cooperation | London | A rating |
| JCB International (Europe) Ltd | London | A rating |
| Jerich UK Ltd | Skelmersdale | A rating |
| Joe and the Juice UK Ltd | London | A rating |
| John Crane UK Limited | Slough | A rating |
| John Sisk & Son Ltd | St. Albans | A rating |
| Johnson & Johnson Medical Ltd | West Lothian | A rating |
| JPMorgan Chase Bank, National Association | London | A rating |
| JTB Europe Ltd | London | A rating |
| JTEKT Automotive England Ltd | Barnsley | A rating |
| Julius Baer International Limited | London | A rating |
| Kannegiesser UK Limited | Banbury | A rating |
| KBC Process Technology Ltd | Walton on Thames | A rating |
| Kellogg Brown & Root (UK) Ltd | Surrey | A rating |
| Kellogg Brown and Root Solutions Limited | Leatherhead | A rating |
| Kent Energies UK Ltd | Woking | A rating |
| KENVUE EMEA SERVICES LIMITED | Reading | A rating |
| Kenwood Limited | Havant | A rating |
| Kepler Cheuvreux | London | A rating |
| Kerry Ingredients UK Ltd | Bristol | A rating |
| KLM UK Engineering Limited | Norwich | A rating |
| Knauf (UK) GmbH | Sittingbourne | A rating |
| KNAUF INSULATION LIMITED | ST HELENS | A rating |
| Knorr-Bremse Systems for Commercial Vehicles Ltd | Bristol | A rating |
| Kohler Mira Limited | Cheltenham | A rating |
| Konica Minolta Business Solutions (UK) Ltd | Basildon | A rating |
| Kuehne + Nagel Ltd | Feltham | A rating |
| KWS UK Limited | Royston | A rating |
| LATHAM & WATKINS (LONDON) LLP | LONDON | A rating |
| Legendre UK Limited | London | A rating |
| Liberty Specialty Markets Ltd | London | A rating |
| Libraesva Limited | Chelmsford | A rating |
| Lincoln College | Lincoln | A rating |
| Lindt & Sprungli (UK) Ltd | Richmond | A rating |
| Linklaters | London | A rating |
| Linnaeus Group Bidco Limited | Shirley | A rating |
| LOYENS & LOEFF | LONDON | A rating |
| Mace Ltd | London | A rating |
| Mandarin Oriental Hyde Park Ltd | London | A rating |
| MANN+HUMMEL (UK) Ltd | Wolverhampton | A rating |
| Mannaz A/S | London | A rating |
| MANOTAN LIMITED | Rugby | A rating |
| Manulife Investment Management (Europe) Ltd | London | A rating |
| Mapfre Re Compania De Reaseguros SA | London | A rating |
| Mars Food UK Limited | Slough | A rating |
| Mars Food UK Limited | Melton Mowbray | A rating |
| Mars Petcare UK | Melton Mowbray | A rating |
| Mars Wrigley Confectionery UK Limited | Slough | A rating |
| Marshall Wace Asset Management Limited | London | A rating |
| Marubeni Europe plc | London | A rating |
| Mastek (UK) Limited | Reading | A rating |
| Mastercard UK Management Services LTD | London | A rating |
| MAXMARA LTD | LONDON | A rating |
| Mayer Brown International LLP | London | A rating |
| McCain Foods (GB) Ltd | Scarborough | A rating |
| McCann Erickson Advertising Ltd | London | A rating |
| McKinsey & Company Inc. United Kingdom | London | A rating |
| Meiji Yasuda Europe Ltd | London | A rating |
| Melitta Uk Ltd | Telford | A rating |
| Meltwater (UK) Limited | London | A rating |
| Mercedes-Benz Financial Services UK Ltd | Milton Keynes | A rating |
| Mercer Ltd | London | A rating |
| Merck Life Science UK Limited | Gillingham | A rating |
| Mettler Toledo Safeline X-ray Limited | Royston | A rating |
| Mews Systems Limited | London | A rating |
| MEXICHEM UK LIMITED (t/a Koura) | Cheshire | A rating |
| Michelin Tyre plc | Stoke-on-Trent | A rating |
| Minamoto Kitchoan Europe Ltd | London | A rating |
| Mirai Power Europe Limited | London | A rating |
| Mission Foods Europe | Middlesex | A rating |
| Mitsubishi Corporation International (Europe) Plc | London | A rating |
| Mitsubishi HC Capital UK PLC | Staines upon Thames | A rating |
| MITUTOYO (UK) LTD | Andover | A rating |
| MM Packaging Deeside Ltd | Deeside | A rating |
| Mobico Group PLC | Birmingham | A rating |
| Moody's Analytics UK Ltd | London | A rating |
| Morgan Technical Ceramics Limited | Stourport-on-Severn | A rating |
| Mott MacDonald Ltd | London | A rating |
| Mourant Services (UK) Limited | London | A rating |