| Koei Tecmo Europe Ltd | Letchworth Garden City | A rating |
| Koenig & Bauer (UK) Ltd | Watford | A rating |
| Koepon Farms | Newton Stewart | A rating |
| Koerber Supply Chain Limited | Heathrow | A rating |
| Kofax Northern Ireland Ltd | Londonderry | A rating |
| Koffe House Ltd T/A Peri Peri Village | London | A rating |
| Koffee House (Celtic) Limited | Worksop | A rating |
| Koffeecup | London | A rating |
| Koffeepot Limited | Manchester | A rating |
| Kogel & Kogel Ltd | Torquay | A rating |
| KOGWENO & BUBI CONSULTANTS LTD | London | A rating |
| KOH GURKHA | BLANDFORD FORUM | A rating |
| Koh Thai Noodle Ltd | plymouth | A rating |
| Koh-E-Noor Hair and Beauty Saloon Limited | London | A rating |
| Koh-I-Noor Palace Ltd | London | A rating |
| KOHA LTD | LONDON | A rating |
| Kohila Niranjane Sasitharan T/A Prince Food And Wine | Surrey | A rating |
| Kohinoor of Kerala (Southampton) Limited | Southampton | A rating |
| KOHINOOR RESTAURANT | SUDBURY | A rating |
| KOHINOOR SPICE LTD | GRAVESEND | A rating |
| KOHINOOR TAKEAWAY (MITCHAM) LTD | Mitcham | A rating |
| Kohlberg Kravis Roberts & Co. Partners LLP | London | A rating |
| Kohler International Holdings Limited | Gloucester | A rating |
| Kohler Mira Limited | Cheltenham | A rating |
| Kohlico Brands UK Ltd | Stanmore | A rating |
| Kohn Pedersen Fox Associates International PA | London | A rating |
| Koho Ltd | Amersham | A rating |
| Kohort Software Limited | London | A rating |
| Kohtari Limited | Derby | A rating |
| Kohyo UK Ltd | London | A rating |
| Koi Footwear Limited | Manchester | A rating |
| Koi Sushi Ltd | Camberley | A rating |
| Koi Tooting Limited | London | A rating |
| Koia Ltd | London | A rating |
| Koinobori Ltd | London | A rating |
| Koinonia | Acton | A rating |
| Koinonia John the Baptist Ireland Ltd | Ballymena | A rating |
| KOIOS Master Data Limited | Winchester | A rating |
| KOIS UK | London | A rating |
| Koito Europe Ltd | Droitwich Spa | A rating |
| KOJIKOJO LIMITED t/a Koji Academy | Telford | A rating |
| Kojima Ltd | London | A rating |
| KOJO CONSTRUCTION LTD | London | A rating |
| KOKI.UK2022 LTD | Colchester | A rating |
| KOKIN TRADING LIMITED | London | A rating |
| Kokni Community Luton | Luton | A rating |
| Koko Art Limited | London | A rating |
| KOKO Foundation | London | A rating |
| Koko London Ltd | London | A rating |
| Kokoro Alliance Ltd( T/A Kokoro Eastbourne) | Raynes Park | A rating |
| Kokoro Caterham Ltd | Walton On Thames | A rating |
| Kokoro CH Ltd T/A Kokoro Horsham | Horsham | A rating |
| Kokoro Crawley Limited | Crawley | A rating |
| Kokoro Durham LTD | Walton-On-Thames | A rating |
| Kokoro Farnborough Ltd | Walton On Thames | A rating |
| KOKORO HANA LTD | Uxbridge | A rating |
| Kokoro Hounslow Ltd | Walton On Thames | A rating |
| Kokoro JNJ Ltd T/A Kokoro Nottingham | Nottingham | A rating |
| Kokoro JV Management Ltd | Walton On Thames | A rating |
| KOKORO NETWORKS LIMITED | KINGSTON UPON THAMES | A rating |
| Kokoro Poole Ltd | Walton-On-Thames | A rating |
| Kokoro Redhill Ltd | Redhill | A rating |
| Kokoro Southampton Ltd | Walton-On-Thames | A rating |
| Kokoro Staines Ltd | Walton-On-Thames | A rating |
| Kokoro SVC ltd | London | A rating |
| Kokoro Tasty Ltd | London | A rating |
| Kokoro Trading Ltd | Walton-on Thames | A rating |
| Kokoro Trading Ltd | Walton-on-Thames | A rating |
| Kokoro UK Ltd | Walton-on-Thames | A rating |
| Kokoro Weybridge LTD | Walton-On-Thames | A rating |
| Kokoro Young Ltd | Epsom | A rating |
| Kokoro Young Ltd T/A KOKORO Epsom | Epsom | A rating |
| Kokulabavan Jeyarasa | Dumfries | A rating |
| KOLA CONSTRUCTION LTD | Poole | A rating |
| KOLA DESIGN LTD | Birmingham | A rating |
| KOLAK SERVICES LTD | BARKING | A rating |
| KOLAK SNACK FOODS LTD | London | A rating |
| KOLAMBA CARNABY LTD T/A KOLAMBA LTD | LONDON | A rating |
| KOLEEY FRIED CHICKEN LTD T/A KOLEEY | WALLINGTON | A rating |
| KOLI PERI PERI LTD | Ashford | A rating |
| Kolina Limited | Harrogate | A rating |
| Kolkata Restaurant Ltd | Milton Keynes | A rating |
| KOLKATI STREET FOOD LTD | Worcester | A rating |
| Kolleno Limited | London | A rating |
| Kollider Project Limited | Sheffield | A rating |
| KOLO FOODS LTD | Lancing | A rating |
| Kolshi Restaurant Limited | Warwick | A rating |
| Koltransport Ltd | Essex | A rating |
| Kolys Foods Ltd T/A Mas Bazaar | Newport | A rating |
| KOLYTICS LTD | READING | A rating |
| Komainu UK Limited | London | A rating |
| Komaleshwari Sivaharan T/A Stanley Street Food and Wine | Bedford | A rating |
| KOMALI LTD T/A KOMALI TECH | READING | A rating |
| Komasha Ltd | London | A rating |
| Komatsu UK Ltd | Chester-le-Street | A rating |
| Komcept Solutions Ltd | Northampton | A rating |
| KOME Entertainment | Warwick | A rating |
| Kome express Ilford | Ilford | A rating |
| KOME EXPRESS LEYTONSTONE HIGH ROAD LTD | London | A rating |
| KOME GROUP LIMITED | London | A rating |
| KOMERZ LTD | London | A rating |
| Komgree Group Limited | York | A rating |
| Komi App Limited | London | A rating |
| KOMI GROUP | Manchester | A rating |
| kommuru technologies ltd | LONDON | A rating |
| Komo Capital LLP | London | A rating |
| Komodo Digital Ltd | Newcastle upon Tyne | A rating |
| Komodo Media Limited | London | A rating |
| KOMOO LIMITED | Wales | A rating |
| KOMOREBI KISSATEN LTD | LONDON | A rating |
| Komori UK Limited | Leeds | A rating |
| Komplex Care Limited | Telford | A rating |
| Komputer Consultancy Services Ltd | Chesham | A rating |
| KOMRUN LIMITED T/A Masalaz | Nuneaton | A rating |
| Komz Consulting Ltd | London | A rating |
| KONA MUSWELL LIMITED | London | A rating |
| KONA PARA LTD | Milford Haven | A rating |
| Konak Meze Ltd | Harrogate | A rating |
| Konami Digital Entertainment B.V. | Windsor | A rating |
| KONARK INSTRUMENTS & CONTROL SYSTEM LTD | Barnet | A rating |
| Konastone Healthcare Ltd | Tipton | A rating |
| KONDAS TRADE LTD | Urmston | A rating |
| KONE Plc | Woking | A rating |
| Konecranes Demag UK Ltd | Ashby De La Zouch | A rating |
| Konecta UK Limited | Ringwood | A rating |
| Konero Group Limited | Leeds | A rating |
| KONESH & CO LTD | Gloucester | A rating |
| KONEXUS RESOURCES GROUP LIMITED | London | A rating |
| Konfloor Ltd | Armagh | A rating |
| Kong International (UK) Limited | Cheltenham | A rating |
| Kong Is Kong Limited T/A Kong | London | A rating |
| Kongsberg Actuation Systems Limited | Normanton | A rating |
| Kongsberg Maritime Ltd | Westhill | A rating |
| Kongsberg Norcontrol Limited | Bristol | A rating |
| Konica Minolta Business Solutions (UK) Ltd | Basildon | A rating |
| KONIKA LTD | ABERDEEN | A rating |
| Konnect Personnel Ltd | London | A rating |
| KONNECT PLUS LTD T/A INJEKT | Glasgow | A rating |
| KONNECT4U LTD | Huddersfield | A rating |
| Konrad Group U.K. Limited | London | A rating |
| Konrad-Adenauer-Stiftung UK Limited | London | A rating |
| Konrad-Technologies UK Ltd | Dunfermline | A rating |
| Konsider Limited | London | A rating |
| Konsistent Consulting Limited | London | A rating |
| Konstruct SW Ltd | Newquay | A rating |
| Konstructive Ltd | London | A rating |
| Konstrukt Creative Limited | London | A rating |
| Kontiki Capital Management (UK) Limited | London | A rating |
| Kontour Production Services Ltd | Pontefract | A rating |
| KONTRON TRANSPORTATION UK LTD | London | A rating |
| Konverge Technologies Limited | London | A rating |
| Konvergent Limited | London | A rating |
| KONVERSATIONAL LIMITED | Godalming | A rating |
| Konzepthaus Consulting Ltd | London | A rating |
| Konzertdirektion Hans Ulrich Schmid UK Ltd | London | A rating |
| Kooee Food & Beverage Ltd | Glasgow | A rating |
| KOOFAN INVESTMENTS LTD | NEWCASTLE UPON TYNE | UK Expansion Worker: Provisional |
| Kookmin Bank Co Ltd London Branch | London | A rating |
| Kool Cakes Bakery Limited | London | A rating |
| Kool Group Ltd | London | A rating |
| KOOLAIR HVAC LTD | Slough | A rating |
| Koolatron International Limited | London | A rating |
| Koolbitz Limited | London | A rating |
| KOOLBITZ LIMITED | Northampton | A rating |
| KOOLKIDZPLUS LTD | Dewsbury | A rating |
| Koolmax Group Ltd | Bolton | A rating |
| Koolmill Systems Limited | Solihull | A rating |
| KOONER SHOP FITERS LIMITED | BILSTON | A rating |
| Kooth Digital Health Limited | London | A rating |
| KOPCEL CATERING LIMITED | Chichester | A rating |
| KOPE AI Ltd | London | A rating |
| Kope-Medics Ltd | London | A rating |
| KOPERNIK POLISH SUPERMARKET LTD | Greenford | A rating |
| Kopernik Supermarket Ltd | Slough | A rating |
| Kopi Management Ltd | Acomb | A rating |
| KOPITIAM & BAR LIMITED | Oxford | A rating |
| KOPLIO LIMITED | LONDON | A rating |
| Koppert Installations Ltd | Harlow | A rating |
| Korabandi Consulting Ltd | Cannock | A rating |
| KORE IT TECHNOLOGY SERVICES LTD | London | A rating |
| Kore Software Limited | London | A rating |
| Kore Systems Limited | Isleworth | A rating |
| KORE Wireless UK Limited | London | A rating |
| KORE.AI UK LIMITED | London | A rating |
| KOREA AEROSPACE INDUSTRIES UK OFFICE | Chester | A rating |
| Korea Creative Content Agency UK | london | A rating |
| Korea Exchange, Inc. UK Branch Office | London | A rating |
| Korea Foods Company Limited | Surrey | A rating |
| Korea Housing Finance Corporation London Branch | London | A rating |
| Korea Investment & Securities Europe Ltd | London | A rating |
| Korea Investment Corporation London Office | London | A rating |
| KOREA LNG LIMITED, LONDON REPRESENTATIVE OFFICE | London | A rating |
| Korea Maritime Cooperation Center | London | A rating |
| Korea Money Brokerage Corporation, London Branch | London | A rating |
| Korea National Pension Service | London | A rating |
| Korea Tourism Organization | London | A rating |
| Korea Trade Centre, London | London | A rating |
| KOREA VENTURE INVESTMENT CORPORATION EUROPE OFFICE | London | A rating |
| Korean Air | LONDON | A rating |
| KOREAN EALING CHURCH | LONDON | A rating |