| Nusara Limited | Bournemouth, Christchurch and Poole | A rating |
| NUSAYBAH JANNAT HULL LIMITED | HULL | A rating |
| Nuseed Global Innovation Ltd | Manchester | A rating |
| nuspace | London | A rating |
| NUSRAT FASHION LTD | London | A rating |
| Nusret UK Limited t/a Nus-Et | London | A rating |
| Nustone Patios LTD | Colchester | A rating |
| NUSUKI LONDON LIMITED | London | A rating |
| Nut Case 352 Ltd | London | A rating |
| NUTAN LIMITED TA Khatri's Rugeley | Rugeley | A rating |
| Nutan Retails Limited t/a SPAR | Paignton | A rating |
| Nutanix Limited | London | A rating |
| NUTLEY HALL | UCKFIELD | A rating |
| Nutmeg (Clifton) Ltd | BRISTOL | A rating |
| NUTMEG AND HIVE LIMITED | London | A rating |
| Nuto LTD | London | A rating |
| Nutopia Ltd | London | A rating |
| NutraPatch Limited | Glasgow | A rating |
| Nutriad Ltd | Chester | A rating |
| NUTRICIA LIMITED | TROWBRIDGE | A rating |
| Nutrinutts Limited | Kensington | A rating |
| NUTRITION GROUP PLC | Blackpool | A rating |
| Nutrition X | Gloucester | A rating |
| Nutrius Central Services Limited | Stoke Prior | A rating |
| Nutrivan Ltd | Ilford | A rating |
| NUTRIVEDA SOLUTIONS LTD | Brentford | A rating |
| Nutrivend Limited | Pontyclun | A rating |
| Nutrix Personnel Ltd | London | A rating |
| Nutshell Holdings Ltd | London | A rating |
| Nuttall Bowser Engineering Ltd | Bristol | A rating |
| Nutten Stoven Residential Home | Spalding | A rating |
| Nutun UK Limited | London | A rating |
| Nutyre UK LTD | HATFIELD | A rating |
| Nuur Ltd | St Helens | A rating |
| NUVAMA FINANCIAL SERVICES (UK) LTD | London | A rating |
| NuVasive UK Limited | Northampton | A rating |
| Nuveen Administration Limited | LONDON | A rating |
| NUVEI (UK) LIMITED | London | A rating |
| Nuvia Ltd | Warrington | A rating |
| Nuvik UK Ltd | Peterhead | A rating |
| NuVision Biotherapies Ltd | Nottingham | A rating |
| Nuvo Accountancy Limited t/a ADS Accountancy Limited | Derby | A rating |
| Nuvo Trading Solutions Ltd | Oldbury | A rating |
| Nuvonic Limited | Slough | A rating |
| Nuvven Ltd | Edinburgh | A rating |
| NUW CRAFTS LTD | London | A rating |
| NUXE UK LIMITED | London | A rating |
| NV Cargo Limited | New Malden | A rating |
| NV GROUP LTD | LEICESTERSHIRE | A rating |
| NV Integration Ltd | London | A rating |
| NV Professional Staff Services | Boston | A rating |
| NVA HOSPITALITY LIMITED t/a The Old Golf House Hotel | West Midlands | A rating |
| Nvalue UK Limited | York | A rating |
| NVD UK Ltd | Swindon | A rating |
| NVGAS Roadside Retail Ltd | Edinburgh | A rating |
| NVH Global Limited | Redhill | A rating |
| NVIDIA Ltd | Reading | A rating |
| NVISIO STUDIO LTD | Staines | A rating |
| NVP Trading Limited | RUBERY | A rating |
| NVSE Limited | Ealing | A rating |
| NW CLUCK'D LTD | NORWICH | A rating |
| NW Convenience Super Store Ltd | Crewe | A rating |
| NW Media Publishing UK Ltd | London | A rating |
| NW OPS 351 LTD T/A PRIME | INVERNESS | A rating |
| NW Publishing UK LTD | London | A rating |
| NW SUPERMARKET LTD T/A NW SUPERMARKET | Watford | A rating |
| NWAN Tech Ltd | Havant | A rating |
| Nwave Technologies Ltd | London | A rating |
| NWD Wealth Management | London | A rating |
| NWEDA LIMITED | London | A rating |
| NWG GROUP LTD | Croydon | A rating |
| NWH | Edinburgh | A rating |
| NWI MANAGEMENT UK LTD | London | A rating |
| NWL Builders Ltd | London | A rating |
| NWO Freehold Limited | Lichfield | A rating |
| NWP PLUMBING LIMITED | Burnley | A rating |
| Nxera Pharma UK Limited | Cambridge | A rating |
| NXP Laboratories UK Limited | Glasgow | A rating |
| NXPower (UK) Ltd t/a Cyberpower | Gateshead | A rating |
| NXT Infotech Limited | Dartford | A rating |
| Nxtgen Housing Ltd | Birmingham | A rating |
| NXTGEN SNS LIMITED | Ipswich | A rating |
| NXZEN GLOBAL LIMITED | Solihull | A rating |
| NY HEALTH SOLUTIONS LTD | Bradford | A rating |
| NY TECH DIGITAL LTD | London | A rating |
| NY-DO Design LTD | London | A rating |
| NY'S FOODS CHINESE TAKEAWAY LIMITED | CARDIGAN | A rating |
| NYA International (UK) Limited | London | A rating |
| NYADOWA SERVICE LIMITED | South Mimms | A rating |
| NYALAPOGULA CONSULTANCY SERVICES LIMITED | DERBY | A rating |
| NYALKARAN LIMITED | HARROW | A rating |
| Nyama Catering Ltd | Wallingford | A rating |
| Nyankonton Trust Foundation | London | A rating |
| Nyas Technology Limited | London | A rating |
| Nybble.co.uk Limited | Lancashire | A rating |
| NYC Bar & Grill Ltd | Glasgow | A rating |
| Nyetimber Vineyard Ltd | West Chiltington | A rating |
| NYK GROUP EUROPE LIMITED | London | A rating |
| NYK Trading Corporation | London | A rating |
| Nykaa International UK Limited | London | A rating |
| NYL Investments UK LLP | London | A rating |
| NYL INVESTORS (U.K.) LIMITED | London | A rating |
| Nylacast Engineered Products Ltd. | Leicester | A rating |
| NYLACAST LIMITED | LEICESTER | A rating |
| Nyman Libson Paul LLP | London | A rating |
| NYMS SERVICES LTD T/A PENNINE CARE CENTRE | Glossop | A rating |
| NYN FOOD SERVICES LTD | London | A rating |
| NYNAS UK AKTIEBOLAG | Wirral | A rating |
| NYO CHARTERED ACCOUNTANTS | LONDON | A rating |
| Nyobolt | Cambridge | A rating |
| Nyoum Limited | London | A rating |
| Nyquist Solutions Limited | Atworth | A rating |
| NYS Home Care Ltd | Preston | A rating |
| Nysa Creations Limited | Harrow | A rating |
| NYSDILL HOTEL MANAGEMENT LTD | NORWICH | A rating |
| Nyton House Limited | Chichester | A rating |
| NYU in London | London | A rating |
| Nyxi Limited | Aylesbury | A rating |
| NYXIUM LTD | London | A rating |
| NZ ASSOCIATES LIMITED | London | A rating |
| NZ Consultants London Ltd | London | A rating |
| NZ ENGINES LIMITED | RAINHAM | A rating |
| NZ SOLUTIONS LIMITED | Stanmore | A rating |
| NZNI building contractors | Lisburn | A rating |
| NZP UK Limited | Reading | A rating |
| NZR Food Ltd/ T/A Pera Kitchen | Bournemouth | A rating |