| KTS Legal Limited t/a Marsans Gitlin Baker | London | A rating |
| KTS Legal Ltd t/a KTS Legal | London | A rating |
| KTS MILE END LIMITED /ROOSTERS PIRI PIRI | LONDON | A rating |
| KTSL Limited | Corsham | A rating |
| KTVT TRADING LIMITED T/A PHO GA | London | A rating |
| Kuai Commerce Limited | London | A rating |
| Kuan Financial (UK) Limited | London | A rating |
| Kuano Ltd | Cambridge | A rating |
| Kuato Games UK Ltd | Ilford | A rating |
| Kub Construction Ltd | LUTON | A rating |
| Kubach & Sambrook (Metals) Limited | Middlesex | A rating |
| Kubberlaxmi Limited | London | A rating |
| Kube Medical Limited | Swindon | A rating |
| Kuberan Cash & Carry Ltd | Liverpool | A rating |
| Kubix Media Ltd | Birmingham | A rating |
| Kubler Racing Ltd | Upper Lambourn | A rating |
| Kubota (UK) Limited | Thame | A rating |
| Kubota Noodle Express UK LTD | Newcastle Upon Tyne | A rating |
| KUBOTA Water and Environment Europe Ltd. | London | A rating |
| KUBRICK GROUP LIMITED | MAYFIELD | A rating |
| Kubus Group Limited | Kemble | A rating |
| Kuchnia Domowa - Polish Cuisine Ltd | Oxford | A rating |
| Kudan Limited | Bristol | A rating |
| KUDEE LTD | Three Bridges | A rating |
| Kudok Ltd | London | A rating |
| Kudos Care (UK) Limited | Gloucestershire | A rating |
| KUDOS LEGAL | PRESTON | A rating |
| Kudos Roadshow Ltd T/A Kudos Music | Uxbridge | A rating |
| KUDU 7 (MARYLEBONE) LIMITED | London | A rating |
| Kuehne + Nagel Ltd | Feltham | A rating |
| Kuflink | Gravesend | A rating |
| KUGANOSHAN SABARATNAM TRADING AS -K.K CONVENIENCE | widnes | A rating |
| Kugans LTD | Ilford | A rating |
| Kugapriya UK Ltd T/A Nalaas Restaurant | Derby, | A rating |
| Kuijpers Balfour Ltd | Sidcup | A rating |
| Kuinji Ltd | London | A rating |
| Kuit Steinart Levy LLP | Manchester | A rating |
| Kujali Care Ltd | Bristol | A rating |
| KUKA Robotics UK Ltd | Wednesbury | A rating |
| Kuka Systems UK Limited | Halesowen | A rating |
| Kukavannan Kanagarasa T/A Jaks Store | Swansea | A rating |
| Kukd.com (UK) Ltd | Cwmbran | A rating |
| Kuklous Healthcare Limited | London | A rating |
| Kuknus Intl Limited | London | A rating |
| KUKO SHAH LIMITED | DAGENHAM | A rating |
| Kukri GB Limited | Preston | A rating |
| KUKU PIRI PIRI LIMITED | GRAYS | A rating |
| KUKU'S FABRICS LIMITED | Leicester | A rating |
| Kukula Education Consultancy Ltd | London | A rating |
| KUKUS PIRI PIRI LIMITED | Ilford | A rating |
| Kula Technologies Limited | Derby | A rating |
| Kulachi LTD T/A Kulachi Solicitors | London | A rating |
| KULALAC BABY FOODS INDUSTRY AND TRADE UK LTD | LONDON | A rating |
| KULARATNAM SARVANANTHALINGAM T/A KVK SUPERSTORE | COVENTRY | A rating |
| KULASEKARAM KASINATHAN T/as BRIGG CONVENIENCE STORE | NORTH LINCOLNSHIRE | A rating |
| KULCHA EXPRESS GLOBAL LTD | Slough | A rating |
| Kulcha Express London Ltd | North Harrow | A rating |
| Kulcha Express Southall Ltd | Hayes | A rating |
| Kulcha Street Ltd | Ilford | A rating |
| Kulinarium Ltd | St. Ives | A rating |
| Kulipa Limited | London | A rating |
| Kullaya Butterworth T/A Holistic Thai Therapy | Twickenham | A rating |
| Kulsuma Limited T/A Bengal Lancer | Withernsea | A rating |
| Kult AI Limited | London | A rating |
| Kult Fashion Limited T/A No Doubt Shoes | Salford | A rating |
| Kult London Limited | London | A rating |
| Kultur Vibes Limited | Manchester | A rating |
| Kulwant Kaur T/as Alvar Karting and Laser Centre | Willenhall | A rating |
| Kumaco Limited | Wolverhampton | A rating |
| Kumala Care Ltd | Walsall | A rating |
| Kumar @39 | Oxford | A rating |
| KUMAR ABBEY FISHBAR LTD | Neath Port | A rating |
| KUMAR ASSOCIATES LIMITED | Romsey | A rating |
| KUMAR BROS LTD | SLOUGH | A rating |
| KUMAR CONSTRUCTION SERVICES LTD | Cheshire | A rating |
| KUMAR ELECTRIX LIMITED | Stanmore | A rating |
| Kumar Family Practice | Wigan | A rating |
| Kumar Home Improvement | Walsall | A rating |
| KUMAR ORGANIC PRODUCTS LTD | London | A rating |
| Kumar Shops Limited | Swansea | A rating |
| Kumar Traders Limited | Cardiff | A rating |
| KUMAR TRADING CENTRE LTD | Sunderland | A rating |
| KUMARASAMY JEYATHASAN | South Yorkshire | A rating |
| Kumarasamy Ratha T/A Gibbon Newsmarket | Newhaven | A rating |
| KUMARI CARE LIMITED | Bath | A rating |
| KUMARI LIMITED | EDGWARE | A rating |
| Kumars Mini Mart Private LTD | Andover | A rating |
| Kumho Tyre (UK) Ltd | Rugby | A rating |
| Kumi Consulting Ltd | London | A rating |
| Kumoco | London | A rating |
| Kumon Europe & Africa Limited | Ealing | A rating |
| Kumon Jesmond | Newcastle upon Tyne | A rating |
| Kumonekta Ltd | Rochester | A rating |
| Kumor Ltd T/A Halfcup King's Cross | London | A rating |
| Kumppanit Limited | Beverley | A rating |
| Kumulos Ltd | Dundee | A rating |
| KUN FOODS LTD | Croydon | A rating |
| KUNA HOLDINGS LTD | London | A rating |
| Kunaratnam Leelananthan & Kalaivany Leelananthan TA Village Convenience Store | London | A rating |
| Kunaseelan Kunaratnam T/A Headington Food & Wine and OX3 Convenience Store | Oxford | A rating |
| Kundun Sweets Limited | Birmingham | A rating |
| Kungfu Masters UK Ltd | London | A rating |
| KUNRI KITCHEN LIMITED | Leicester | A rating |
| Kunshi Services UK Ltd | Barking | A rating |
| KUNZLE LIMITED | London | A rating |
| KURA CARE LTD | Bradford | A rating |
| KURALA & SONS LTD | Wolverhampton | A rating |
| KURAMOH LOUNGE LTD | LONDON | A rating |
| kurd production limited | Leeds | A rating |
| KURIAN'S FINANCIAL CONSULTANTS LIMITED | Peterborough | A rating |
| Kurita UK Limited | Livingston | A rating |
| Kurk Biosciences Ltd. | Hounslow | A rating |
| KURL LEGAL SERVICES LIMITED T/A KURL LEGAL SERVICES | Nottingham | A rating |
| Kurland Park Polo Limited | Midhurst | A rating |
| Kuro Coffee Ltd T/A Kuro Eatery | London | A rating |
| Kuro Health Services Limited | Brighton | A rating |
| Kurogo Group Ltd | London | A rating |
| KURSK LIMITED | Bishop Thornton | A rating |
| Kurst Studios Ltd | London | A rating |
| Kurt Catering Limited | London | A rating |
| Kurt Geiger Limited | London | A rating |
| KURT J. LESKER COMPANY LIMITED | St. Leonards on Sea | A rating |
| KURUM GROUP LIMITED | London | A rating |
| Kurumilagu Indian Kitchen | Bradford | A rating |
| KURY UK Ltd | Bristol | A rating |
| Kusch London Limited | London | A rating |
| KUSHI GP LTD | Gidea Park | A rating |
| kushi media ltd | London | A rating |
| Kushram Ltd. T/A Swan Street Stores | Hampshire | A rating |
| Kusnacht Practice Polo Team | Maidenhead | A rating |
| Kusum Enterprise Limited | Haywards Heath | A rating |
| Kutchenhaus Reigate Ltd | Reigate | A rating |
| Kuttan Ltd | Stockport | A rating |
| KUTTANAD TASTE LTD | Manchester | A rating |
| KUTTING PROFESSIONALS LIMITED | London | A rating |
| Kuungana Advisory Limited | Godalming | A rating |
| Kuvari Partners (UK) Services Limited | London | A rating |
| Kuwait Airways Company | West Drayton | A rating |
| KUWAIT FINANCE HOUSE PLC | London | A rating |
| Kuwait Oil Company K.S.C | London | A rating |
| Kuwait Petroleum Corporation | London | A rating |
| Kuwait Petroleum International Ltd | Woking | A rating |
| Kuzzy Group Ltd | Henley on Thames | A rating |
| KV & SONS LTD T/as Premier Wragby Store | LINCOLNSHIRE | A rating |
| KV GROUP LIMITED | Nottingham | A rating |
| KV Manufacturing Ltd | West Sussex | A rating |
| Kvadrat Ltd | London | A rating |
| KVG SERVICES LIMITED T/A BUCANEER SERVICE STATION -JET | Cleethorpes | A rating |
| KVH Shuttering | Omagh | A rating |
| Kvika Securities Ltd | London | A rating |
| KVJ FOOD AND WINE LTD T/A BEST ONE | BEDFORD | A rating |
| KVR Enterprises Limited | Broadclyst | A rating |
| KVS Property Management Limited | Morden | A rating |
| KVS Softwares Limited | Hove | A rating |
| KVS TRADERS LTD T/A STAR NEWS FOODSTORE | Coventry | A rating |
| KW Designed Solutions Ltd | Chorley, Lancashire, | A rating |
| KW MOTORS LTD | ST ALBANS | A rating |
| KW TRADING LONDON LIMITED | London | A rating |
| KWA Analytics Ltd | London | A rating |
| Kwackers West Quay Limited trading as Kwackers Kitchen and Sports Bar | Southampton | A rating |
| Kwalee Ltd | Leamington Spa | A rating |
| Kwality Hotel Limited | Manchester | A rating |
| KWALITY LTD | Dagenham | A rating |
| KWAME OWUSUOPPONG LIMITED | Dagenham | A rating |
| Kwan Yick (UK) Ltd | Newport | A rating |
| KWASA Invest Limited | London | A rating |
| KWICK CLAIMS EDINBURGH LTD | Edinburgh | A rating |
| Kwick Stitch LTD | Preston | A rating |
| KWICK TYRES LTD | Newcastle Upon Tyne | A rating |
| KWICKSAVE LTD TRADING AS FAMILY CHOICE | Hamilton | A rating |
| Kwik Buy Limited | Leicester | A rating |
| KWIK E MART MCR LIMITED | Manchester | A rating |
| Kwik Film Limited | London | A rating |
| Kwik Fix Auto Care | Birmingham | A rating |
| Kwik Fix Limited | Manchester | A rating |
| Kwik Fix Motors Ltd | London | A rating |
| Kwik Kleen Limited | Hammersmith | A rating |
| Kwik Mart Ltd | London | A rating |
| KWIK SAVE LTD | READING | A rating |
| Kwik Web LTD | Glasgow | A rating |
| KWIKDRIVE DRIVING SCHOOL LTD | London | A rating |
| KWIKFIX RECRUITMENT SERVICES LIMITED | Northampton | A rating |
| Kwikstart Ltd | Barking | A rating |
| Kwikt Limited | London | A rating |
| KWING Overseas Ltd | London | A rating |
| Kwintech Service Limited | Warrington | A rating |
| KWM (UK) LIMITED | Cambridge | UK Expansion Worker: Provisional |
| KWM Europe LLP | London | A rating |
| Kwokyau Ltd | London | A rating |
| KWS UK Limited | Royston | A rating |
| KWT Global Ltd | London | A rating |
| Kx Advisors LLC | London | A rating |
| KX Power Limited | London | A rating |
| KY ACCOUNTANCY SERVICES LTD | NEW MALDEN | A rating |
| KY9 SERVICES LIMITED | Barking | A rating |
| KYA PIZZA LTD T/A KYA PIZZA | Houghton Le Spring | A rating |
| KYATI LIMITED T/A JAYS PHARMACY | WESTON SUPER MARE | A rating |
| Kyati Ltd T/As Jays Pharmacy | Weston-Super-Mare | A rating |
| KYBERNETES SECURITY LTD | Bristol | A rating |
| KYDOS DIGITAL LTD | Manchester | A rating |