| Exponentia.ai Limited | London | A rating |
| Export-Import Bank of India | London | A rating |
| Expro North Sea Ltd | Aberdeen | A rating |
| Exquitech Limited | London | A rating |
| Exscientia AI Limited | Abingdon | A rating |
| Exterro UK Limited | London | A rating |
| Extreme Networks UK Technology Limited | Reading | A rating |
| EXUS SOFTWARE LTD | LONDON | A rating |
| Exus UK&I Limited | Salford | A rating |
| EYOS UK Limited | Alton | A rating |
| Eyre Hotels Ltd | London | A rating |
| Eze Castle Integration - United Kingdom Limited | London | A rating |
| Ezoic UK Ltd | Newcastle upon Tyne | A rating |
| F C Brown (Steel Equipment) Limited | Newport | A rating |
| F H Bertling Logistics Aberdeen Ltd | Bucksburn | A rating |
| F Network Holdings UK Limited | London | A rating |
| F Schumacher & Co UK Ltd | Chelsea Harbour, London | A rating |
| F-M Motorparts Limited | Manchester | A rating |
| F-Prime Inc (UK branch) | London | A rating |
| F. INITIATIVES LIMITED | London | A rating |
| F. List UK LTD. | Kent | A rating |
| F. SCHUMACHER & CO. UK LTD | London | A rating |
| F/CE. LONDON LAB LTD | London | A rating |
| F5 Networks Limited | Addlestone | A rating |
| F50 League GB Ltd | London | A rating |
| Faaborg Pharma UK Limited | LONDON | A rating |
| Fabrique Ltd | Warwick | A rating |
| Facctum Solutions Limited | London | A rating |
| Facebook UK | London | A rating |
| FACEPHI BEYOND BIOMETRICS LTD | London | A rating |
| Factal Ltd | London | A rating |
| Factor Law Ltd t/a Factor | Belfast | A rating |
| FactSet Europe Limited | London | A rating |
| Fadaat Media | London | A rating |
| Faegre Drinker Biddle & Reath LLP | London | A rating |
| FAIR CONSULTING GROUP UK LIMITED | London | A rating |
| Fair Isaac Services Limited | London | A rating |
| Fair Justice System for Scotland Group | West Calder | A rating |
| Fairbanks Environmental Limited | Skelmersdale | A rating |
| Faire Wholesale UK Ltd. | London | A rating |
| Fairmont Hotels and Resorts | London | A rating |
| Fairview Beaconhurst Ltd | Bridge of Allan | A rating |
| FAIRWIND INSTALLATION LTD | London | A rating |
| Falcon Coffees Ltd | Lewes | A rating |
| Falcon Group Administrative Services (UK) Limited | London | A rating |
| Faltec Europe Ltd | Sunderland | A rating |
| Fanatics International Limited | Manchester | A rating |
| FANCY LIFESTYLE LTD | London | A rating |
| Fandom-UK, Ltd | London | A rating |
| FanDuel Limited | Edinburgh | A rating |
| Fannin (UK) Limited | Swadlincote | A rating |
| Fanos Limited | London | A rating |
| FAR EAST FACADE (UK) LIMITED | Bristol | A rating |
| Far East Orchard UK Management Limited | London | A rating |
| FARALLON CAPITAL EUROPE LLP | LONDON | A rating |
| Farfetch UK Limited | London | A rating |
| Faria Education Limited | Macclesfield | A rating |
| Farient Advisors Limited | London | A rating |
| Farmland Reserve (UK) Limited | Huntingdon | A rating |
| Faronics EMEA | Bracknell | A rating |
| Farra Marine UK Ltd | Killough | A rating |
| Farrel Limited | Rochdale | A rating |
| Fasken Martineau LLP | London | A rating |
| Fast Retailing UK Ltd | London | A rating |
| Fastenal Europe Ltd | Glasgow | A rating |
| FASTHOSTS INTERNET LIMITED | Gloucester | A rating |
| FASTINO LIMITED | EAST RIDING OF YORKSHIRE | A rating |
| Fastly Limited | LONDON | A rating |
| Fastmarkets Global Limited | London | A rating |
| Fat Llama Limited | London | A rating |
| FATA Automation Limited | Worcester | A rating |
| Fauna & Flora International | Cambridge | A rating |
| Faurecia | Lichfield | A rating |
| Fayat Lifting Ltd | London | A rating |
| FCB Health London Limited | London | A rating |
| FCB Inferno Limited | London | A rating |
| FCC Construccion SA UK Branch | London | A rating |
| FCC Environment (UK) Limited | Doncaster | A rating |
| FCMB Bank (UK) Limited | London | A rating |
| FD Technologies Plc | Newry | A rating |
| FDT Construction Services Limited | London | A rating |
| Fearnleys Shipbrokers UK Ltd | London | A rating |
| Federal-Mogul Ltd | Manchester | A rating |
| Federated Hermes Limited | London | A rating |
| FedEx Express UK Limited | Atherstone | A rating |
| Feedzai UK Limited | London | A rating |
| Feelunique International Limited | London | A rating |
| Feld Entertainment UK Limited | London | A rating |
| Fenchem GB Limited | Manchester | A rating |
| Fenchurch Law (UK) Ltd | London | A rating |
| Fendi UK Limited | London | A rating |
| Fenris Creations UK Ltd | London | A rating |
| FERRAGAMO U.K. LIMITED | LONDON | A rating |
| Ferrari Group PLC | London | A rating |
| Ferrari N.V. UK Branch trading as Ferrari North Europe | Slough | A rating |
| Ferrero UK Limited | Greenford | A rating |
| FERROGLOBE PLC | London | A rating |
| Ferrovial Construction UK Ltd | London | A rating |
| Festo Ltd | Northampton | A rating |
| FEV UK Ltd | Coventry | A rating |
| FGS Global (UK) Limited | London | A rating |
| FIA TECHNOLOGY SERVICES, LLC | Bristol | A rating |
| FIAMM UK Limited | Cannock | A rating |
| FIAT CHRYSLER AUTOMOBILES SERVICES UK LIMITED | BASILDON | A rating |
| Fiat Vouge Limited | Ilford | A rating |
| Fibretrace Technologies Limited | London | A rating |
| Fibrisol Service Limited | London | A rating |
| FIDANTE PARTNERS EUROPE LIMITED | LONDON | A rating |
| Fidbank UK Limited | London | A rating |
| Fidelis Marketing Limited | London | A rating |
| Fidenda Limited | Hertfordshire | A rating |
| FIEGE LOGISTICS DIRFT LIMITED | Birmingham | A rating |
| Field Effect Security Ltd | London | A rating |
| Fieldfisher LLP | London | A rating |
| Fiera Capital (UK) Limited | London | A rating |
| FIFTH SEASON UK, LTD. | London | A rating |
| Figma UK Limited | London | A rating |
| Figured Software UK Limited | London | A rating |
| Fiit Limited | London | A rating |
| FIL Investment Management Limited | London | A rating |
| Filmlight Limited | London | A rating |
| Financial Recovery Technologies UK Limited | London | A rating |
| Financial Supervisory Service | London | A rating |
| Finastra International Limited | London | A rating |
| Fincons Consulting Limited | London | A rating |
| Fincra Technologies Ltd. | Nuneaton | A rating |
| FINDABLE.AI LIMITED | London | A rating |
| Fine Organics Ltd | Middlesbrough | A rating |
| FINEOS UK Limited | Bedford | A rating |
| Fineqia Limited | London | A rating |
| FinIQ Solutions Limited, UK | London | A rating |
| Finmechanics UK Limited | London | A rating |
| Finnair Oyj | London | A rating |
| Finnegan Europe LLP | London | A rating |
| Finning (UK) Ltd | Cannock | A rating |
| Finquest Services Limited | London | A rating |
| FINSA UK LTD | Birkenhead | A rating |
| Finsight Group UK Limited | London | A rating |
| Finster AI, UK | London | A rating |
| FinTech Partners Ltd | London | A rating |
| Fintegral UK Limited | London | A rating |
| Fintern Ltd | London | A rating |
| Fiorano Software Ltd. | London | A rating |
| FIREBLOCKS UK INT'L LIMITED | London | A rating |
| Firecracker Works Limited | London | A rating |
| Firemate Ltd | Nottingham | A rating |
| Firemind Ltd | Maidstone | A rating |
| FireMon Limited | Warwick | A rating |
| Firmenich UK Ltd | Southall | A rating |
| Firmex International Limited | London | A rating |
| First Advantage Europe Ltd | Nottingham | A rating |
| First Commercial Bank Limited | London | A rating |
| First Protocol Event Management Limited | London | A rating |
| First Quantum Minerals (UK) Limited | London | A rating |
| First Rail Holdings Limited | London | A rating |
| First Sentier Investors (UK) Services Limited | London | A rating |
| First Trust Global Portfolios Ltd. | London | A rating |
| First Up, S.L.U t/a Master Stonemasons (UK establishment) | Sutton Coldfield | A rating |
| FirstBank UK Limited | London | A rating |
| FirstRand Bank Ltd (London Branch) | London | A rating |
| Firstsource Solutions UK Limited | London | A rating |
| Firstup UK Limited | London | A rating |
| FIS Capital Markets UK Limited | London | A rating |
| Fiserv (Europe) Ltd. | Basildon | A rating |
| Fisher & Paykel Appliances Limited | Northampton | A rating |
| Fisher Investments Europe Limited | London | A rating |
| Fiskars UK Limited | Stoke on Trent | A rating |
| Fitch Ratings Limited | London | A rating |
| FitzWalter Capital Limited | London | A rating |
| Five Guys JV LTD | London | A rating |
| Five Rings Capital LLP | London | A rating |
| Five9, Inc UK Limited | London | A rating |
| Fiver London Limited | Basildon | A rating |
| Fives Landis Limited | Keighley | A rating |
| Fivesky Limited | London | A rating |
| FKN Facades UK Limited | London | A rating |
| Flagship Pioneering UK Limited | London | A rating |
| FlaktGroup UK Limited | Hereford | A rating |
| Flamco Ltd | St Helens | A rating |
| Flamingo Horticulture Investments Ltd | Stevenage | A rating |
| Flatiron Health UK Ltd | St Albans | A rating |
| Flatirons Solutions Ltd | Derby | A rating |
| FLATPAY APS | London | A rating |
| Fleet Bidco Limited | London | A rating |
| Fleetcor Europe Limited | London | A rating |
| Flender Limited | Leeds | A rating |
| Flexera Software Limited | Risley | A rating |
| Flexjet Limited | London | A rating |
| Flexport International Limited | London | A rating |
| FlexTrade UK Limited | London | A rating |
| Flextronics Global Services (Manchester) Limited | Appleton | A rating |
| Flight Centre (UK) Ltd | London | A rating |
| FlightSafety International UK Limited | Farnborough | A rating |
| Flint Ink (U.K.) Limited | Wolverhampton | A rating |
| FLINTEC UK LIMITED | Cardiff | A rating |
| Flintfox Europe Limited | Bishops Stortford | A rating |
| Flo Health UK Limited | London | A rating |
| Flokk Limited | Mirfield | A rating |
| Floqast UK Limited | London | A rating |
| Flora Food Sales UK Limited | London | A rating |