| NewCold Ltd | Wakefield | A rating |
| Newcross Healthcare Solutions Limited | London | A rating |
| NewDay Cards Limited | London | A rating |
| Newell Rubbermaid UK Services Limited | Lichfield | A rating |
| Newforma UK Ltd | London | A rating |
| Newly Weds Foods Limited | Ossett | A rating |
| Newmark Holdings Limited | London | A rating |
| Newrest Holding UK Limited | Slough | A rating |
| News Corp UK & Ireland Limited | London | A rating |
| NewStore Ltd | London | A rating |
| NewWaves Solutions Limited | London | A rating |
| Nexans Logistics Limited | Milton Keynes | A rating |
| NexantECA Limited | London | A rating |
| Nexmo Ltd | London | A rating |
| Nexperia UK Ltd | Stockport | A rating |
| Next 15 Group plc | London | A rating |
| Next Gate Tech Limited | London | A rating |
| NEXT GEN DIAGNOSTICS UK LTD | Cambridge | A rating |
| Next Jump Limited | London | A rating |
| Next Management London Limited | 5 - 23 Old Street | A rating |
| Next Retail Ltd | Leicester | A rating |
| Nextdoor Europe UK Limited | London | A rating |
| Nexthink Limited | London | A rating |
| NFL International Limited | London | A rating |
| NFOQUE Advisory Services UK Ltd | London | A rating |
| NGC International Inc. UK Branch | London | A rating |
| NGC Management (UK) Limited | Altrincham | A rating |
| NGF EUROPE Limited | St Helens | A rating |
| NGK Spark Plugs (UK) Limited | Hemel Hempstead | A rating |
| NH Foods U.K. Limited | London | A rating |
| NH Investment & Securities Europe Ltd | London | A rating |
| NHOA UK Limited | London | A rating |
| Niantic Spatial UK Limited | London | A rating |
| NIBC BANK NV | LONDON | A rating |
| NICE Systems UK Limited | Southampton | A rating |
| Nichino Europe Co. Ltd | Cambridge | A rating |
| NICHUANG (UK) LTD | London | A rating |
| Nicomatic Ltd | London | A rating |
| Nidec Control Techniques Limited | Newtown | A rating |
| Nielsen Media Research Ltd | London | A rating |
| NIF Investment Advisor Uk Ltd | London | A rating |
| Nifco UK Limited | Stockton-on-Tees | A rating |
| Nigel Frank International Ltd | Newcastle upon Tyne | A rating |
| NIGERIA LNG LIMITED | LONDON | A rating |
| NIGERIAN NATIONAL PETROLEUM CORPORATION | LONDON | A rating |
| Nigerian Ports Authority | London | A rating |
| Nightingale Health UK Limited | London | A rating |
| Nihilent Limited | London | A rating |
| Nihon Cyber Defence Ltd | Belfast | A rating |
| Nihon Shipyard UK Ltd | London | A rating |
| NIHON SHOKKEN HOLDINGS CO., LTD. | London | A rating |
| NIIT Limited UK | London | A rating |
| Nike Retail UK | London | A rating |
| Nikkei Europe Limited | London | A rating |
| Nikken Kosakusho Europe Ltd | Rotherham | A rating |
| Nikkiso Medical UK Limited | Acton | A rating |
| Nikon Metrology UK Ltd | Derby | A rating |
| Nikon Precision Europe GmbH | Dunfermline | A rating |
| NINE58 Advisors | London | A rating |
| Ninety One UK Limited | London | A rating |
| Ninja Tune Limited | London | A rating |
| Nintendo of Europe SE, UK branch | Windsor | A rating |
| Nintex UK Limited | London | A rating |
| NIO Performance Engineering Ltd | Witney | A rating |
| NIOC International Affairs (London) Limited | London | A rating |
| Nippon Express (UK) Ltd | Hayes | A rating |
| Nippon Hoso Kyokai (NHK) - [Japan Broadcasting Corporation] | London | A rating |
| Nippon Kaiji Kyokai (UK) Ltd | London | A rating |
| Nippon Life Global Investors Europe Plc | London | A rating |
| NIPPON LP RESOURCES UK LIMITED | London | A rating |
| Nippon Paint Automotive (UK) Limited | Swindon | A rating |
| Nippon Sanso UK Limited | Immingham | A rating |
| Nippon Steel Trading Austria GmbH London Office | London | A rating |
| Nippon Television Network London Bureau T/A Nippon TV (NNN) London | London | A rating |
| Nippon Thompson Europe B.V. | Milton Keynes | A rating |
| Nippon Yakin Europe Limited | London | A rating |
| NIRAS Group (UK) Ltd | Ascot | A rating |
| NISHIHARA SHOKAI UK LTD. | London | A rating |
| Nishikawa Rubber Co. Ltd. | Coventry | A rating |
| Nishimura & Asahi UK Limited | London, England | A rating |
| Nisos Group Limited | Belfast | A rating |
| Nissan Motor (GB) Limited | Rickmansworth | A rating |
| Nissan Motor Manufacturing (UK) Ltd | Sunderland | A rating |
| Nissan Trading Europe Ltd. | Sunderland | A rating |
| NISSIN (U.K.) LIMITED | West Drayton | A rating |
| Nissin (U.K.) Ltd. | West Drayton | A rating |
| Nittan Europe Limited | Surrey | A rating |
| Nityo Infotech Ltd | Reading | A rating |
| Nixplay UK Limited | Plymouth | A rating |
| NJC Europe Limited | Oldham | A rating |
| NKC Conveyors (UK) Ltd | Milton Keynes | A rating |
| NKT HVC Limited | Redcar | A rating |
| NLI Operator Ltd | London | A rating |
| nlyte Software Limited | London | A rating |
| NMB MINEBEA UK LTD | LINCOLN | A rating |
| NMG Financial Services Consulting Limited | London | A rating |
| NNR GLOBAL LOGISTICS UK LIMITED | FELTHAM | A rating |
| NNR Global Logistics UK Ltd | Feltham | A rating |
| Noatum Logistics UK Limited | Egham | A rating |
| NOBEL BIOCARE U.K. LIMITED | Uxbridge | A rating |
| Noble Drilling (Land Support) Ltd | Aberdeen | A rating |
| Noble Drilling UK Limited | Cheshire | A rating |
| NOBLE OFFSHORE DRILLING (UK) LTD | Aberdeen | A rating |
| NOBU LONDON LIMITED | London | A rating |
| Nodety Limited | Macclesfield | A rating |
| Noe and Associates Limited | London | A rating |
| Noerr PartGmbB | London | A rating |
| Nofitech UK | Menstrie | A rating |
| Nokia UK Limited | Bristol | A rating |
| Nomad Digital Limited | Derby | A rating |
| Nomad Foods Europe Limited | WOKING | A rating |
| Nomique Seating Limited | Telford | A rating |
| Nomura Asset Management UK Limited | London | A rating |
| NOMURA FIDUCIARY RESEARCH & CONSULTING CO., LTD. LONDON BRANCH | London | A rating |
| Nomura International Plc | London | A rating |
| Nomura Real Estate UK Limited | London | A rating |
| Nomura Research Institute Europe Limited | London | A rating |
| NongHyup Bank London Branch | London | A rating |
| NOOM HEALTH UK LIMITED | LONDON | A rating |
| Noon Tech Limited | London | A rating |
| Norcros Group (Holdings) Ltd | Wilmslow | A rating |
| Nord Anglia Education Ltd | London | A rating |
| Nordcloud Limited | London | A rating |
| Norddeutsche Landesbank Girozentrale | London | A rating |
| NORDDEUTSCHER RUNDFUNK , ARD German TV and Radio, London | London | A rating |
| Nordex UK Ltd | Manchester | A rating |
| Nordic Capital Investment Advisory LLP | London | A rating |
| Norebo Europe Limited | Maidenhead | A rating |
| Norges Bank | London | A rating |
| Norgine Limited | Uxbridge | A rating |
| Norilsk Nickel ( Cyprus) Ltd | London | A rating |
| Normative Limited | London | A rating |
| Normet UK Limited | Coventry | A rating |
| Norr Consultants Limited | Cambridge | A rating |
| Norroy Capital Corp | London | A rating |
| Norstat UK Limited | London | A rating |
| North American Science Associated Ltd | Selby | A rating |
| North Highland (UK) Limited | London | A rating |
| North Road UK LLP | London | A rating |
| North West Marine Ltd | Oban | A rating |
| Northacre Limited | London | A rating |
| Northeastern University - London | London | A rating |
| Northern Gas Networks Ltd | Leeds | A rating |
| Northern Marine Group Ltd | Clydebank | A rating |
| Northern Trust Management Services Limited | London | A rating |
| Northland Controls Ltd | Letchworth Garden City | A rating |
| NORTHLAND REAL ESTATE PROPERTIES (UK) LIMITED | Aberdeen | A rating |
| Northleaf Capital Partners (UK) Limited | London | A rating |
| Northslope Technologies Limited | Bristol | A rating |
| NorthStandard Limited | Newcastle Upon Tyne | A rating |
| Northwest Globals UK Ltd | Hounslow | A rating |
| Northwood Investors International Limited | Reading | A rating |
| Northzone Ventures UK Limited | London | A rating |
| Norton Rose Fulbright LLP | London | A rating |
| NortonLifeLock UK Limited | London | A rating |
| Norwegian Cruise Line Group UK Limited | Southampton | A rating |
| Norwegian Hull Club - London Branch | London | A rating |
| Nosto Solutions UK Ltd | London | A rating |
| Notesco UK Limited | London | A rating |
| Notonthehighstreet Enterprises Ltd | Bristol | A rating |
| Nous Group (UK) Ltd | London | A rating |
| NOUS INFOSYSTEMS (UK) PVT. LTD | BRENTFORD | A rating |
| Nous Infosystems Pvt. Ltd. | Brentford | A rating |
| Nouvelle Garde Limited | London | A rating |
| Nova Aerospace Ltd | Filton | A rating |
| Nova Systems (International )Ltd | Bournemouth | A rating |
| NOVAMINDS LTD | London | A rating |
| NOVANTA TECHNOLOGIES UK LIMITED | Stockport | A rating |
| NOVAPERA LTD | London | A rating |
| Novartis Pharmaceuticals UK Ltd | London | A rating |
| Novata UK Limited | London | A rating |
| Novelis UK Limited | Warrington | A rating |
| Noventiq Group Limited | London | A rating |
| Novidea Limited | London | A rating |
| Novigo Solutions Ltd. | Warwick | A rating |
| NOVO HOLDINGS EQUITY UK LIMITED | London | A rating |
| Novo Nordisk Ltd | Gatwick | A rating |
| Novo Nordisk Research and Development UK Limited | Oxford | A rating |
| Novogene (UK) Company Limited | Cambridge | A rating |
| NP Aerospace Limited | Coventry | A rating |
| NPC INternational Ltd | London | A rating |
| NPSG UK Ltd | London | A rating |
| NR Electric UK Limited | Irlam | A rating |
| NRS Ocean Logistics Ltd. | London | A rating |
| NS Solutions IT Consulting Europe Ltd | London | A rating |
| NS United Shipping (UK) Limited | London | A rating |
| Nscale Operations (UK) Limited | London | A rating |
| NSF Safety and Quality UK Limited | LONG HANBOROUGH | A rating |
| NSI INDUSTRIAL O&M SOLUTIONS LTD | Truro | A rating |
| NSK Europe Limited | Maidenhead | A rating |
| NSK United Kingdom Ltd | Hertfordshire | A rating |
| NT Island Operations Ltd | Bristol | A rating |
| NTN Bearings (UK) Limited | Lichfield | A rating |
| NTS Cambridge Holding Ltd | Cambridge | A rating |
| NTT Cloud Communications UK Ltd | London | A rating |
| NTT Data Business Solutions Limited | London | A rating |
| NTT DATA Services UK Limited | London | A rating |
| NTT DATA UK LIMITED | London | A rating |
| NTT Finance UK Limited | London | A rating |
| NTT Global Data Centers EMEA UK Ltd | Hemel Hempstead | A rating |