| K2 Consultancy Limited | London | A rating |
| K2 Corporate Mobility Limited | Guildford | A rating |
| K2 Dynamics Limited | Aylesbury | A rating |
| K2 DYNAMICS LIMITED | Aylesbury, England | A rating |
| K2 ENGINEERING & ENERGY LTD | Morden, | A rating |
| K2 Group Holdings Limited | London | A rating |
| K2 Healthcare Ltd | Grantham | A rating |
| K2 INDIAN RESTAURANT LTD T/A K2 Restaurant | Polegate | A rating |
| K2 Intelligence Limited | London | A rating |
| K2 Management Renewables Limited | Bristol | A rating |
| K2 MEDICAL SYSTEMS LIMITED | Plymouth | A rating |
| K2 Partnering Solutions Holding Co Ltd | London | A rating |
| K2 Solar Mounting Solutions Ltd | Reading | A rating |
| K2 Taj Chippery & Curry House Ltd | Blackburn | A rating |
| K2 WINDOWS & DOORS (UK) LIMITED | Stoke-On-Trent, | A rating |
| K23 Limited T/A K23.ai | Guildford | A rating |
| K27 LTD T/A Nisa Local | Farnborough | A rating |
| K2C INTERNATIONAL TRADE LTD | London | A rating |
| K2K KASHMIR TO KANYAKUMARI LIMITED | HOUNSLOW | A rating |
| K2K Limited (Allesley Post OFfice and Convenience Store) | Coventry | A rating |
| K2P FOODS LIMITED | Leicester | A rating |
| K2RE Limited | Manchester | A rating |
| K2SA Limited | London | A rating |
| K3 Advantage Limited | London | A rating |
| K3 Business Technology Group plc | Manchester | A rating |
| K360 Events Ltd | London | A rating |
| K4 Group Services Limited | Hounslow | A rating |
| K4 SECURITY SERVICES LIMITED | HOUNSLOW | A rating |
| K423 Limited | London | A rating |
| K5 Construction Ltd | Chatham | A rating |
| K7 Media Ltd | Manchester | A rating |
| K9 PATROL SECURITY LTD | Blackburn | A rating |
| K9 Paw Security Ltd | Stoke-On-Trent | A rating |
| K9 Secure Ltd | Birmingham | A rating |
| K9 Security Ltd | London | A rating |
| K9 Vets LTD | Oldbury | A rating |
| KA & KI BATH LIMITED | Bristol | A rating |
| KA BHAM LIMITED | Birmingham | A rating |
| KA Cosulting Ltd. | London | A rating |
| KA CUISINE LTD T/A Rajas | Glasgow | A rating |
| KA Food Stores Limited | Nottinghamshire | A rating |
| KA Homes Limited | Luton | A rating |
| KA Jewellers Limited | Wembley | A rating |
| KA Platinum Builders Limited | Bradford | A rating |
| KA PREMIER UK LIMITED | Derby | A rating |
| KA Services (UK) Limited | London | A rating |
| KA Test Consultant Ltd | Bradford | A rating |
| KA Walsall Limited | Walsall | A rating |
| KA WB Limited | West Bromwich | A rating |
| KA-YAT LIMITED | London | A rating |
| KA2A LIMITED | Tiverton | A rating |
| Kaa Dent Hub Limited t/a Mountain Ash Dental Practice | Mountainash | A rating |
| KAA Enterprise Limited T/A Autotronics | Leicester | A rating |
| Kaaij Greenhouses UK Limited | Birchington | A rating |
| KAAINA LIMITED | Oban | A rating |
| KAAJ TRADING LTD T/A TEXACO | PRESCOT | A rating |
| Kaali Convenience Store Ltd | London | A rating |
| Kaali Enterprises Ltd | Edinburgh | A rating |
| KAALIKA LTD | Beeston | A rating |
| Kaamil Education Limited | London | A rating |
| KAANI KAANA LTD | Chelmsford | A rating |
| Kaap Ltd T/A Subway | Feltham | A rating |
| Kaar Technologies UK Limited | Huddersfield | A rating |
| Kaashe Retail LLP | Basingstoke | A rating |
| KAASHI (SK) LTD TRADING AS SUBWAY | LEEDS | A rating |
| Kaavee ltd | Milton Keynes | A rating |
| KAB Seating limited | Northampton | A rating |
| KABADDI SPORT CLUB SOUTHALL LTD | Ickenham | A rating |
| KABAKU G.S LTD | London | A rating |
| Kabana Takeaway & Restaurant | Huddersfield | A rating |
| Kabanos Supermarket Ltd | Burton-on-Trent | A rating |
| Kabayan Capital Ltd | Elmsbrook | A rating |
| Kabayan Finance Limited | Bicester | A rating |
| Kabelan Limited | Aylesbury | A rating |
| Kabilas House Ltd | Stanmore | A rating |
| Kabin Off Licence Ltd | Manchester | A rating |
| KABIR TRAVELS LTD | BIRMINGHAM | A rating |
| Kabod Sanctuary | Bolton | A rating |
| KABUL BAZAAR UK 2018 LIMITED | Edgware | A rating |
| KABUL DERA LTD | Aylesbury | A rating |
| KABUL GROCERS LIMITED | London | A rating |
| Kabul Kebab Restaurant Ltd | London | A rating |
| Kabushiki Kaisha Nikkei B.P. trading as Nikkei Business Publications Inc | London | A rating |
| KACHA BAZAR | London | A rating |
| Kacha Bazar International Ltd T/a Kacha Bazar | London | A rating |
| Kacha Bazar Limited | Luton | A rating |
| KACHHELA BROTHERS LIMITED | Leicester | A rating |
| Kacoo Fashion Limited | MANCHESTER | A rating |
| KAD CONSULTING ENGINEERS LIMITED | Carshalton | A rating |
| KADAA LIMITED | London | A rating |
| Kadampa Meditation Centre London | London | A rating |
| Kadampa Meditation Centre Plym | PLYMOUTH | A rating |
| Kadarcare Service Ltd | London | A rating |
| Kadco Fashion & Textile LTD | Bradford | A rating |
| KADDER CLEANING SERVICES LIMITED | Upminster | A rating |
| Kaden Properties Limited | London | A rating |
| Kadence International Ltd | London | A rating |
| Kadesh Care Ltd | Enfield | A rating |
| Kadfire | Redditch | A rating |
| Kadiem Group Limited | London | A rating |
| KADIR & CO MANAGEMENT LIMITED | London | A rating |
| Kadmiel Projects Limited | Rainham | A rating |
| Kadmos Capital Ltd | London | A rating |
| Kadmos Consultants | Harrow on the Hill | A rating |
| KADOSH MARIAN MINISTRIES | MANOR PARK | A rating |
| KADVA INVESTMENTS LIMITED | Bolton | A rating |
| KADWA PATIDAR SAMAJ (UK) LIMITED | Harrow | A rating |
| KAE: Marketing Intelligence Ltd | London | A rating |
| Kaedim | London | A rating |
| Kaedim Limited | London | A rating |
| KAEFER Limited | Newcastle Upon Tyne | A rating |
| KAENIS CONSULT LTD | LONDON | A rating |
| KAESSBOHRER UK LIMITED | London | A rating |
| Kaf Clothing LTD | London | A rating |
| KAF Telecom Ltd | Chadwell Heath | A rating |
| KAFADAR LIMITED | LONDON | A rating |
| Kaffee limited | London | A rating |
| Kafleas Academy Limited | London | A rating |
| KAFLEAS LTD | LONDON | A rating |
| KAFM ENTERPRISES LTD | Littlehampton | A rating |
| Kagool Ltd | Coventry | A rating |
| KAHAAF LIMITED | LONDON | A rating |
| Kahaila Limited | London | A rating |
| Kahani Lounge Ltd | Ilford | A rating |
| Kahani Restaurant | Edinburgh | A rating |
| Kahlon Construction Limited | Stanwell | A rating |
| Kahn Wholesales Ltd | Uxbridge | A rating |
| KAHOUT BROTHERS LTD | High Wycombe | A rating |
| KAI Computer Services Ltd | LONDON | A rating |
| KAI Design Limited t/a KAI Interiors | London | A rating |
| Kai Kitchen Co LLP T/A Kai | Leicester | A rating |
| Kai Mayfair Ltd | London | A rating |
| Kaiapoi | Nr Braughing | A rating |
| Kaiasm | Frome | A rating |
| Kaifa Technology UK Limited | Milton Keynes | A rating |
| Kaihua UK Limited TAs Cumberland Hotel | Eastbourne | A rating |
| Kaiiro Ltd T/A Iro Sushi Woolwich | London | A rating |
| KAILASH DOUBLE GLAZING LTD | RAINHAM | A rating |
| Kailash Momo Bar Limited T/A Kailash Momo (Woolwich) | London | A rating |
| KAILIZ LTD | Manchester | A rating |
| Kainos Software Ltd | Belfast | A rating |
| Kair Ventilation Limited | Sidcup | A rating |
| Kaira global LTD | slough | A rating |
| KAIRALI FOODS LTD | Manchester | A rating |
| KAIRALI INTERNATIONAL LIMITED | MANCHESTER | A rating |
| Kairos IM LLP | London | A rating |
| Kairos Media Ltd | London | A rating |
| Kairos Women+ | Paisley | A rating |
| Kaise Limited | Oldham | A rating |
| KAISER ACCOUNTANCY SERVICES LIMITED | London | A rating |
| Kaiser Associates International, Inc | London | A rating |
| KAISER NOUMAN NATHAN LLP | LONDON | A rating |
| Kaiser Retailers Limited | Stockport | A rating |
| KAISER TAX AND ACCOUNTANCY LIMITED | London | A rating |
| Kaisertech Limited | Eastleigh | A rating |
| Kaithai Local Express | London | A rating |
| KAIYIXIN EDUCATION CONSULTANCY LIMITED | London | A rating |
| KAIZ LTD T/A BURNHILL STORE | GLASGOW | A rating |
| KAIZEN CONSULTING AND ENGINEERING LTD | MK | A rating |
| Kaizen Consulting Services Ltd | Cambridge | A rating |
| KAIZEN CUISINE LTD | Winchester | A rating |
| KAIZEN FOODS LIMITED T/A Pepe's Piri Piri | London | A rating |
| Kaizen Reporting Limited | London | A rating |
| Kaizen Search Marketing LTD | LONDON | A rating |
| Kaizen Tech Limited | Park Royal | A rating |
| Kaizen UK Consulting Limited | London | A rating |
| Kaizzen Tech Limited | Arkley | A rating |
| KAJ TRADING LTD | Bromley | A rating |
| Kajaine Kafton LLP | Edgware | A rating |
| Kajan Sivasuthan T/A Royal Park Express | Barking | A rating |
| Kajans Womens Enterprise Ltd | Birmingham | A rating |
| KAJANTHAN NADARAJAH T/A PREMIER | Grimsby | A rating |
| KAJE & CO LIMITED | Westcliff On Sea | A rating |
| KAJI RETAIL LTD | Castleford | A rating |
| Kajima Europe Limited | London | A rating |
| Kajima Partnerships Ltd | London | A rating |
| Kajinthiny Kanesarasa T/A P K T Convenience Stores - Premier | Radstock | A rating |
| KAKA GROUP LTD | North London | A rating |
| KAKA Stores LTD | Northampton | A rating |
| KAKA TYRES LTD | Birmingham | A rating |
| KAKATEEYA CONSULTING SERVICES LTD | Northwich | A rating |
| Kakkar Sons Limited | Southall | A rating |
| Kal Aviation Services Ltd | London | A rating |
| KAL DOSA (PVT) LTD | BRISTOL | A rating |
| KAL IT Limited | Cheshire | A rating |
| KAL Software UK | Edinburgh | A rating |
| KAL WINE SOURCE UK LTD | London | A rating |
| Kal-Med Consulting CIC | Livingston | A rating |
| Kala Atkinson Ltd | London | A rating |
| Kala trading Limited | High Wycombe | A rating |
| Kalai Tech Limited | Coulsdon | A rating |
| Kalaiselvi Periannan | Worcester | A rating |
| Kalakuta Sunrise Ltd | London | A rating |
| KALAN MEAT AND CHICKEN LIMITED | LONDON | A rating |
| KALANA LTD T/A CRISPY DOSA HARROW | HARROW | A rating |
| KALASH LIMITED T/A EVEREST TANDOORI | Farnborough | A rating |
| Kalawati Ltd | Edinburgh | A rating |
| Kaldi Financial Technology Ltd | London | A rating |
| Kaldor Ltd | London | A rating |
| Kaleidoscope Group Ltd | Stanmore | A rating |