| Kitch & Honey Limited | London | A rating |
| KITCHEN & COMPANY LONDON LIMITED | London | A rating |
| Kitchen & Tap Co Ltd | Bowdon | A rating |
| KITCHEN 71 LIMITED | Morley | A rating |
| KITCHEN AND CATERING SERVICES LTD | Buckingham | A rating |
| KITCHEN BROTHERS LTD | Northampton | A rating |
| Kitchen Coos & Ewes LTD | New Luce | A rating |
| Kitchen Corner Ltd | Hayes | A rating |
| kitchen in a box limited | Leeds | A rating |
| KITCHEN MASALA LTD T/A GINGER INDIAN TAKEAWAY | Portsmouth | A rating |
| Kitchen Provisions | London | A rating |
| Kitchen Range Foods | Huntingdon | A rating |
| Kitchen Royale Ltd T/A Kitchen Royale | Crawley | A rating |
| Kitchen Theory Ltd. | London | A rating |
| Kitchen Ventures Ltd | LONDON | A rating |
| Kitchen66 Limited | Lincoln | A rating |
| KITCHENS OF KERALA LTD | Newcastle Upon Tyne | A rating |
| Kitchenware Ltd | Luton | A rating |
| Kitchies Ltd | Newcastle Upon Tyne | A rating |
| KITE COURIER LIMITED | West Bromwich | A rating |
| Kite Insights Limited | London | A rating |
| Kite Lake Capital Management (UK) LLP | London | A rating |
| Kitec Healthcare Services Limited | Bedford | A rating |
| Kiton UK Ltd | London | A rating |
| Kitous Limited | London | A rating |
| KITRI Limited | London | A rating |
| Kitrin (UK) Limited | Englefield Green | A rating |
| Kitsa Limited | Pinner | A rating |
| Kitt Technology Ltd | London | A rating |
| KITTU EXPRESS LTD | NEWCASTLE UPON TYNE | A rating |
| Kiveton convenience Store | SHEFFIELD | A rating |
| Kivnon UK Ltd | London | A rating |
| Kivue Limited | Reading | A rating |
| Kivue Limited | Gerrards Cross | A rating |
| Kiwa Ltd | Cheltenham | A rating |
| Kiwi Commerce Ltd | Manchester | A rating |
| Kiwi Movers Ltd | London | A rating |
| Kiwi Services (East Anglia) Ltd | Saxmundham | A rating |
| KIYANNI LTD | Middlesbrough | A rating |
| Kiyanpay ltd | London | A rating |
| Kiyansh Gourmet Limited T/A Saffron Summer | Chessington | A rating |
| Kiyo Beauty Ltd | Grays | A rating |
| Kiyora Spa Ltd | London | A rating |
| KIYU TRADING LIMITED | Belfast | A rating |
| Kizazi | London | A rating |
| KJ CARGO SHIPPING SERVICES LTD | LONDON | A rating |
| KJ Edinburgh Ltd | Edinburgh | A rating |
| KJ Marketing Management Ltd | Hounslow | A rating |
| KJ Tait Engineers Ltd | Glasgow | A rating |
| KJ Thermosets | Bradford | A rating |
| KJ&J ENTERPRISE LTD | Haywards Heath | A rating |
| KJAM LIMITED | LONDON | A rating |
| KJB Foods Ltd | Birmingham | A rating |
| KJD CARE LIMITED | LONDON | A rating |
| KJF LTD T/A LARKINS STORE | ARUNDEL | A rating |
| KJR Baldock Ltd | Hitchin | A rating |
| KJR Software Services Ltd | Reading | A rating |
| KJS SUPERSTORE LTD | STEVENAGE | A rating |
| KJUS UK | Glasgow | A rating |
| KK & AC Limited | London | A rating |
| KK & P LIMITED, T/A K & B Convenience Store | Maidenhead, England, | A rating |
| KK CAKES LTD | Telford, | A rating |
| KK CHICKEN SHOP LTD | LONDON | A rating |
| KK F&B Ltd T/A Mo Baz | Bournemouth | A rating |
| KK GRP Limited | Colchester | A rating |
| KK Hospitality Limited T/A The Tava Shop | Croydon | A rating |
| KK Jewellers Ltd | Edinburgh | A rating |
| KK MOTOR SPARES LTD | BRADFORD | A rating |
| KK NEW BARN LTD | Cheltenham | A rating |
| KK NEWPORT LIMITED | Newport | A rating |
| KK PRODUCTS AND FOAMS LIMITED | Sutton Coldfield | A rating |
| KK Rooster Ltd T/A The King Rooster | London | A rating |
| KK SECURITY & FM LTD | Rochdale | A rating |
| KK Service Brockley Ltd | Bromley | A rating |
| KK TRADERS (MCR) LTD | Manchester | A rating |
| KK TRADERS LTD trading as K and K Food and Wine | Bicester | A rating |
| KK Trading Group Ltd | Swansea | A rating |
| KK TYPHON EVENTS LIMITED | MAIDSTONE | A rating |
| KK9RECRUITMENT LTD | LUTON | A rating |
| KKA Limited | Liverpool | A rating |
| Kkan Pharma Limited | Dunstable | A rating |
| KKAN TRADING LIMITED T/A ANGEL CONVENIENCE STORE | BEDFORDSHIRE | A rating |
| KKARAMAY LIMITED | London | A rating |
| KKaur Transport Ltd | Hayes | A rating |
| KKB Smiles Ltd | Crawley | A rating |
| KKB SMILES LTD T/A ELM HOUSE DENTAL PRACTICE | Crawley Down | A rating |
| KKBM LTD | COVENTRY | A rating |
| KKCG UK Advisory Ltd | London | A rating |
| KKG RETAIL LTD | Aberdeen | A rating |
| KKINI LTD | LONDON | A rating |
| KKISS DESSERTS LTD | London | A rating |
| KKM GARAGES LTD | LANARKSHIRE | A rating |
| KKM Management Ltd t/a Freshgos Supermarket | Doncaster | A rating |
| KKS Advisors Limited | London | A rating |
| KKS Building Ltd. | London | A rating |
| Kks Grove Retail Limited | Folkestone | A rating |
| KKS WORLDWIDE LIMITED | London | A rating |
| KKTK Ltd | London | A rating |
| KKTK2 LTD TARO JAPANESE RESTAURANT | London | A rating |
| KKV (UK) LIMITED | BERKSHIRE | A rating |
| KKVB Services Ltd | Bromley | A rating |
| KKWJS Limited | Salisbury | A rating |
| KL Builders Limited | London | A rating |
| KL CARS PRESTON LTD T/A KL CARS PRESTON | Preston | A rating |
| KL Communications Ltd | Surbiton | A rating |
| KL Convenience Store Limited | Edlington | A rating |
| KL FOOD CRAFT LTD | Derby | A rating |
| KL GARAGE PRIVATE LIMITED | STOKE-ON-TRENT | A rating |
| KL Ventures Ltd | Camberley | A rating |
| KL88 LTD | Halifax | A rating |
| KLA Corporation UK Limited | Newport | A rating |
| KLAFS UK Limited | Thame | A rating |
| Klaire Carriers Limited | Wolverhampton | A rating |
| Klar Investments Ltd | Edinburgh | A rating |
| KLAR Partners Ltd | London | A rating |
| Klarendon Ltd | Swindon | A rating |
| Klaridan Group Ltd T/a McDonald's | Crawley | A rating |
| KLARIS AI LTD | London | A rating |
| Klarna Bank AB UK Branch | London | A rating |
| Klarus Global Limited | London | A rating |
| Klash Limited | Oldham | A rating |
| Klass Care Ltd | Poole | A rating |
| KLASSIC GLOBAL SERVICE LIMITED | CHELTENHAM | A rating |
| Klassic Trade Frames (UK) Limited | Birmingham | A rating |
| KLASSIC WHOLESALE LTD | GREENFORD | A rating |
| Klaus Bode Consultancy Ltd. | London | A rating |
| Klaviyo Ltd | London | A rating |
| KLAW UK LIMITED | Burnham | A rating |
| Klay Capital Limited | London | A rating |
| KLD IMPORTS LIMITED | Preston | A rating |
| KLDiscovery Limited | London | A rating |
| Klean keepers Ltd | London | A rating |
| Kleanology Ltd | St Ives | A rating |
| KLEEMANN LIFTS UK LIMITED | ASHFORD | A rating |
| Kleijnen Systematic Reviews Ltd | York | A rating |
| KLEIN EILAND LTD | London | A rating |
| KLEJ Ltd t/a Bluebird Care | Barnet | A rating |
| Kleo Cloud Limited | Winchester | A rating |
| Kleroo Limited | Colchester | A rating |
| Klesch and Company Limited | London | A rating |
| Klevu UK Limited | London | A rating |
| Kleyn Healthcare Ltd | Warrington | A rating |
| KLG GROUP INTL LTD | Lopndon | A rating |
| KLH Sustainability Ltd | London | A rating |
| KLH UK LIMITED | London | A rating |
| Klick Health UK Private Limited | London | A rating |
| Klient Software Solutions Limited | Crook | A rating |
| Klik2learn Limited | Glasgow | A rating |
| Klimato ltd | London | A rating |
| Kline Consulting Europe Ltd | London | A rating |
| KLINE HILL PARTNERS (UK) LIMITED | London | A rating |
| Klinera Data Services Limited | London | A rating |
| Klinica Physiotherapy and Healthcare Limited | Ashford | A rating |
| Klinika Limited T/A Palmers Green Clinic | London | A rating |
| KLM Fishing Ltd | Lerwick | A rating |
| KLM Royal Dutch Airlines | Bedfont | A rating |
| KLM UK Engineering Limited | Norwich | A rating |
| KLN BARBECUE AND LOCAL LIMITED | LEICESTER | A rating |
| KLN Freight (UK) Limited | Manchester | A rating |
| Kloay's Care Ltd | Pontefract | A rating |
| KLOCKNER PENTAPLAST LIMITED | Newport | A rating |
| Klohn Crippen Berger (UK) Limited | Heworth Green | A rating |
| KLOTHES RESTORERS LTD TA NOVA CLEAN | Walton On Thames | A rating |
| KLP Management Limited | London | A rating |
| KLR GLOBAL LTD | Ealing | A rating |
| KLR SOLICITORS LTD | KENT | A rating |
| KLS Business ltd | Powys | A rating |
| Kluber Lubrication Great Britain Ltd | Huddersfield | A rating |
| Klura Ltd | Haverhill | A rating |
| KLUSTER ENTERPRISES LIMITED | London | A rating |
| KLV Software Solutions Ltd | Staines | A rating |
| Klyn Stone Limited | London | A rating |
| KM BIOSCIENCES LTD | London | A rating |
| KM CATERING LIMITED | Bedfordshire | A rating |
| KM FAST FOOD LTD | London | A rating |
| KM Heating Services Ltd | Rochdale | A rating |
| KM Kayani Limited | Deeside | A rating |
| KM MANAGEMENT SOLUTIONS LIMITED | Middlesbrough | A rating |
| KM PRODUCTS EUROPE LIMITED | CHERTSEY | A rating |
| KM Restaurants Ltd | London | A rating |
| KM Services | Oldham | A rating |
| KM Services Nationwide Ltd | Bolton | A rating |
| KM Solicitors Ltd | MANCHESTER | A rating |
| KM St Andrews Ltd | St Andrews | A rating |
| KM TASTE LTD T/a Llandudno Grill | Llandudno | A rating |
| KM Television Ltd | Chatham Maritime | A rating |
| KM TRADERS LTD | Rainham | A rating |
| KM UK Services Limited | London | A rating |
| KMA Planning LLP | London | A rating |
| KMA Tech Holding Limited | London | A rating |
| KMAC Blast & Spray limited | Dungannon | A rating |
| KMB CATERERS LTD | UXBRIDGE | A rating |
| KMB Storage Limited | Huddersfield | A rating |
| KMBS 1 Limited, T/a Burger and Sauce | Smethwick | A rating |
| KMBS 2 Limited T/a Burger and Sauce | Coventry | A rating |
| KMD INVESTMENTS LTD | Manchester | A rating |
| KMD Structures Ltd | London | A rating |
| KME STEELWORKS LTD | Lisburn | A rating |
| KMEC Clitheroe | Clitheroe | A rating |
| KMF & SONS LTD | Dudley | A rating |