| KOREAN FRIED CHICKEN LTD | Dewsbury | A rating |
| KOREAN KIMCHI LTD | READING | A rating |
| Korean Register of Shipping | London | A rating |
| Korean Reinsurance Company | London | A rating |
| Korean Zip Ltd | Brighton and Hove | A rating |
| Korg (UK) Limited | Milton Keynes | A rating |
| KORI | London | A rating |
| Korkia Venture Insight UK Ltd | London | A rating |
| KORLOY UK LIMITED | Exhall | A rating |
| Korlyns Therapeutics Limited | Redhill | A rating |
| Korn Ferry (UK) Limited | London | A rating |
| Korn Wall Ltd | London | A rating |
| KORNER EXPRESS LTD | GLASGOW | A rating |
| KORNERBLOC UK LIMITED | LONDON | A rating |
| Korol Limited | London | A rating |
| Korotana Group Ltd | Essex | A rating |
| Korotana Ltd. T/As TheOffy | High Wycombe | A rating |
| Korozo UK Ltd | Edgware | A rating |
| Kortext Limited | Bournemouth | A rating |
| Kortical Ltd | London | A rating |
| Koru Care UK Ltd | Barlborough, Chesterfield | A rating |
| Koru Kids | London | A rating |
| Koru Life Science Limited | London | A rating |
| KORU SERVICES LIMITED | BOREHAMWOOD | A rating |
| Korus Health Ltd | Truro | A rating |
| Korutek Engineering Ltd | Norwich, | A rating |
| KORUTEK ENGINEERING LTD | Norwich | A rating |
| Koryu Limited | Colchester | A rating |
| KOSANJO CARE LIMITED | LONDON | A rating |
| KOSE CORPORATION UK BRANCH | London | A rating |
| KOSHARI STREET LIMITED | London | A rating |
| Kosher Deli (UK) Limited | London | A rating |
| KOSHER EDGE LIMITED | EDGWARE | A rating |
| Kosher Savers Ltd | Salford | A rating |
| Koshi Group Limited T/A Koshi Bar & Restaurant | PENICUIK | A rating |
| Koshia Jose t/a Andover Stores | Andover | A rating |
| KOSI CARE LIMITED | CROYDON LONDON | A rating |
| KOSK RESTAURANTS PVT LTD | Great Totham | A rating |
| KOSLI LIMITED | Brentford | A rating |
| Kosmos Energy LLC | London | A rating |
| Kosomax Ltd | Hayes | A rating |
| Kostal UK Limited | Sheffield | A rating |
| KOSYKIDS LIMITED | London | A rating |
| Kotak & Partners Limited | Harrow | A rating |
| Kotak Mahindra (UK) Limited, | London | A rating |
| Koth Gaming Limited | London | A rating |
| Koth Import and Export Ltd | Hounslow | A rating |
| Kothia Property Holdings Limited | London | A rating |
| Kothu Restaurants & Bar Limited | London | A rating |
| Koto Restaurants Limited | Oxford | A rating |
| Koto Studio Ltd | London | A rating |
| Kottu King Ltd | Watford | A rating |
| KOTURE LIMITED | LONDON | A rating |
| Kouei LTD | London | A rating |
| Kounnis Insuforce Limited | London | A rating |
| KOURITEN LIMITED | London | A rating |
| KOUSAR MART LTD | DUNDEE | A rating |
| KOVA LTD T/A Kova Patisserie | London | A rating |
| Kovacs Construction Ltd | London | A rating |
| Kovaion Consulting Limited, | London | A rating |
| Kovrr UK Ltd | LONDON | A rating |
| Kowa Pharmaceutical Europe Co. Ltd. | Wokingham | A rating |
| KOX Limited | Leeds | A rating |
| Koya Ko Limited T/A Koya Ko Hackney | London | A rating |
| Koya Properties Limited | Barry, Wales | A rating |
| KOYANAGI WORLDWIDE LIMITED | HERTFORDSHIRE | A rating |
| KOYO LTD | London | A rating |
| Kozoco Limited | Dundee | A rating |
| KOZZI TASTE LTD | Surrey | A rating |
| KOZZY BREAKFAST BAR LTD | SOUTHGATE | A rating |
| KP Brother Ltd | Belvedere | A rating |
| KP Building Contractors Limited | Slough | A rating |
| KP Edgware Ltd. T/As Komi Palm | Edgware | A rating |
| KP GROUP LONDON LTD | Slough | A rating |
| KP Hill Service Station | Blackley | A rating |
| KP INDIAN RESTAURANT LIMITED T/A Kitchen7 | Derbyshire | A rating |
| KP MINI MARKET LTD | HULL | A rating |
| KP O2 LTD | LONDON | A rating |
| KP Pankhania Ltd | Wembley | A rating |
| KP Pay Limited | London | A rating |
| KP Premier Care Ltd | Northallerton | A rating |
| KP Snacks Limited | Slough | A rating |
| KP SOFTWARE SOLUTIONS LTD | Slough | A rating |
| KP Son Ltd | Worthing | A rating |
| KP Stores | Rock Ferry | A rating |
| KP's Local Middleton Ltd | Leeds | A rating |
| KP2 Limited | Knighton | A rating |
| KPA PRIVATE LIMITED | ELTHAM | A rating |
| KPEC Limited | Coventry | A rating |
| KPF HOLDING LIMITED | Frome | A rating |
| KPFA LIMITED | Luton | A rating |
| KPG Global Education Ltd | Coventry | A rating |
| KPH DE-CONSTRUCTION SERVICES LTD | CATERHAM | A rating |
| KPH Global Limited | Birmingham | A rating |
| KPH Paradise Ltd T/A One Stop | Birmingham | A rating |
| KPH Supermarkets Ltd | Birmingham | A rating |
| KPH UNIVERSE LTD | Coventry | A rating |
| KPI OCEANCONNECT UK LTD | London | A rating |
| KPIT TECHNOLOGIES (UK) LTD | COVENTRY | A rating |
| KPK FACILITIES LTD | Manchester | A rating |
| KPK SECURITY LTD | Oldbury, Birmingham | A rating |
| Kpler Limited | London | A rating |
| KPM ENGINEERING LTD | Lancs | A rating |
| KPMD IT Solutions Ltd | Sheffield | A rating |
| KPMG IFRG Ltd | London | A rating |
| KPMG Ireland | Belfast | A rating |
| KPMG LLP | London | A rating |
| KPMG LLP (Local Hires) | London | A rating |
| KPMG US Tax Service (London) LLP | London | A rating |
| KPMSUK Limited | Colchester | A rating |
| KPN Sai Health Care Ltd | Northampton | A rating |
| KPNEWS LIMITED | Sheffield | A rating |
| KPP SEARCH LIMITED | London | A rating |
| KPP Ventures Ltd | Brighton | A rating |
| KPR Care Services ltd | Exeter | A rating |
| KPR Enterprises Limited | Essex | A rating |
| KPRZYBYSLAWSKA LIMITED- MEDICOVDENT | COVENTRY | A rating |
| KPS Digital Ltd | London | A rating |
| KPS Wine Limited | Stevenage | A rating |
| KPSR LLP | MIDDLESEX | A rating |
| KPSS (UK) Ltd | London | A rating |
| KPT Merrivale Wine Store | Halewood | A rating |
| KPTREND LIMITED | Harrow | A rating |
| KPTRS Investments Holding Ltd | London | A rating |
| KPV LAB Edinburgh Ltd | Edinburgh | A rating |
| KPV SERVICES LIMITED | London | A rating |
| KPY PHILLIPS YOUNG LLP | SURREY | A rating |
| KQ Foods Ltd | Northampton | A rating |
| KQ PARTNERS LTD | Sheffield | A rating |
| KQ SOLICITORS | Luton | A rating |
| KQF Distribution Ltd | Leyton | A rating |
| Kr & Aaa Ltd | Southall | A rating |
| KR & FAMILY LTD | London | A rating |
| KR BANDA MEDCARE LIMITED | Peterborough | A rating |
| KR COFFEE LTD | London | A rating |
| KR Salisbury Ltd | Ludgershall | A rating |
| KRA Accountants Limited | Halifax | A rating |
| KRA RETAIL LTD T/As Watford Service Station - Esso | Watford | A rating |
| KRAB BROS LTD T/A Subway (Canon Lane) | Tonbridge | A rating |
| Krai Ltd | Cambridge | A rating |
| KRAKEN GROCERS LTD | Glasgow | A rating |
| Kraken Robotics Services UK Limited | Westhill | A rating |
| Kraken Technologies Limited | London | A rating |
| KRAKOW FOOD & WINES LIMITED | GREENFORD | A rating |
| KRAMAH STANCH LTD | Solihull, Birmingham | A rating |
| Kramarenko Russian Circus | Manorbier | A rating |
| Kramp UK Ltd | Biggleswade | A rating |
| Krank Limited | Cambridge | A rating |
| Krantz Limited | Rochester | A rating |
| KRASA LIMITED | LONDON | A rating |
| KRASTA BUILDERS LIMITED | London | A rating |
| Kratha Bondhu Ltd t/a Moju (Dalston) | London | A rating |
| Kratos Analytical Ltd | Manchester | A rating |
| Kratos Communications Limited | Gateshead | A rating |
| Kratositconsulting | Tonbridge | A rating |
| Krause Automation Ltd. | East Grinstead | A rating |
| Krauss Maffei (UK ) Ltd | Warrington | A rating |
| Krazy Cuts | Bradford | A rating |
| KRB Capital Limited T/A Socca | London | A rating |
| KRB RETAIL | NOTTINGHAM | A rating |
| Kreab Ltd | London | A rating |
| Kreate Many Limited | Virginia Water | A rating |
| Kreativ Solutions Limited | Leicester | A rating |
| Kreative VH Consulting Ltd | Welling | A rating |
| Kredo Consulting Limited | Cheltenham | A rating |
| KREK CONSULTING LTD | London | A rating |
| Krempel UK Ltd | Preston | A rating |
| Kress Cooper Academy LTD | Surrey | A rating |
| Kresso Care Limited | Dartford | A rating |
| Kreston Reeves LLP | Sandwich | A rating |
| Kreutzer Touristik GB Limited | Romford | A rating |
| KRG Care Homes Ltd | Middlesex | A rating |
| KRG Care Limited Trading as Prime Home Care | Harrow | A rating |
| KRG Marketing UK Ltd | Evesham | A rating |
| KRIASH STORES LIMITED | Eastleigh | A rating |
| Kricket Ltd | London | A rating |
| KRICKET SOHO LIMITED | LONDON | A rating |
| Krimah Ltd | Barking | A rating |
| Krimas Ltd T/A In Parma | London | A rating |
| Krina Beauty Limited | Harrow | A rating |
| Krinvest Care Group Limited | Kenley | A rating |
| Kripa Care Limited | Harrow | A rating |
| KRIROSH STORES LIMITED | SOUTHAMPTON | A rating |
| Krisan Services LTD | Frenchay | A rating |
| KRISCO SERVICES LIMITED T/A BP | Reading | A rating |
| KRISH BUSINESS SERVICE LTD | Croydon | A rating |
| KRISH CONVENIENCE LTD | Aberdeen | A rating |
| KRISH EXPRESS RETAILS LTD | Brixton | A rating |
| KRISH FOOD & WINE | COVENTRY | A rating |
| krish news food & wine | twickenham | A rating |
| Krish Private Limited t/a News & Photos | Shirley | A rating |
| KRISH RETAIL LTD T/A CLAIRE NEWSAGENT | NORTHUMBERLAND | A rating |
| Krishan Iniya Limited T/A Dosa Village | Coventry | A rating |
| KRISHAN SERVICE STATION LTD | Pontypridd | A rating |
| Krishiv Express Limited | Feltham | A rating |
| KRISHIVAY LIMITED | LEICESTER | A rating |
| Krishkul Ltd | Charlton | A rating |
| Krishmorgan Solicitors Ltd | Croydon | A rating |
| KRISHNA (CKAF) LTD trading as Subway | Bracknell | A rating |
| KRISHNA & TRADERS LTD | LARKHALL | A rating |