| Northsea Solutions Limited | Aberdeen | A rating |
| Northshore EMEA Limited | London | A rating |
| Northside Medical Practice | Londonderry | A rating |
| Northsix Europe Limited | London | A rating |
| Northslope Technologies Limited | Bristol | A rating |
| NORTHSNOW LTD | Kent | A rating |
| NorthStandard Limited | Newcastle Upon Tyne | A rating |
| Northstar Consultancy Ltd | London | A rating |
| NORTHSTAR HOME CARE LIMITED | Manchester | A rating |
| Northstar Research Partners (UK) Limited | London | A rating |
| NORTHSTAR RETAIL LTD | Newcastle Upon Tyne | A rating |
| Northstar Travel Media Limited | London | A rating |
| Northstone NI Ltd | Dunmurry | A rating |
| Northstreet Dental Practice Ltd T/A North Street Dental and Implant clinic | Emsworth | A rating |
| NORTHSTREET NEWS LTD | BRISTOL | A rating |
| Northumberland County Council | Morpeth | A rating |
| Northumberland Events Limited | London | A rating |
| NORTHUMBERLAND HEATH DENTAL PRACTICE | Kent | A rating |
| Northumberland Heath Medical Centre | Erith | A rating |
| Northumberland House Limited | London | A rating |
| Northumberland House Surgery | Kidderminster | A rating |
| Northumbria Calvert Trust / Calvert Kielder | Hexham | A rating |
| Northumbria Forecourts Ltd | Newcastle upon Tyne. | A rating |
| Northumbria Healthcare NHS Foundation Trust | Newcastle upon Tyne | A rating |
| Northumbria Optical Coatings Limited | Boldon | A rating |
| Northumbria Pharma Limited | Sedgefield | A rating |
| Northumbria University | Newcastle Upon Tyne | A rating |
| Northumbrian Water Limited | Durham | A rating |
| Northvet Veterinary Group Ltd. | Kirkwall | A rating |
| Northwards Ltd | Lerwick | A rating |
| NORTHWAY NEWS AGENT & STORES LTD | Dudley | A rating |
| Northwest Care Providers Ltd | Bolton | A rating |
| Northwest CB Limited T/A Classic Bistro | Londonderry | A rating |
| Northwest Globals UK Ltd | Hounslow | A rating |
| Northwest London Law Centres | London | A rating |
| Northwest Maintenance Pvt Ltd | London | A rating |
| NORTHWEST MARKET LTD | HARROW | A rating |
| NORTHWEST TRAVELS LTD | Liverpool | A rating |
| NORTHWEST YOUTH SERVICES LTD | Poulton-le-Fylde, | A rating |
| Northwich Foot Clinic Ltd | Northwich | A rating |
| Northwick Park Institute for Medical Research | Harrow | A rating |
| NORTHWOOD COMPLEX CARE LTD | Blackburn | A rating |
| Northwood Convenience Ltd. | Sutton-In-Ashfield | A rating |
| Northwood Investors International Limited | Reading | A rating |
| Northwood Law Practice T/A Burnham Law Practice | Burnham | A rating |
| Northwood School | Northwood | A rating |
| Northzone Ventures UK Limited | London | A rating |
| Northzone Ventures UK Ltd | London | A rating |
| NORTON CROSS SERVICE STATION | KENT | A rating |
| NORTON DENTAL PRACTICE | Stourbridge | A rating |
| Norton Folgate Solicitors | London | A rating |
| Norton Hydraulics (Midland) Ltd | Birmingham | A rating |
| Norton in Hales Cricket Club | Market Drayton | A rating |
| Norton Kitchen and Bedrooms ltd | Birmingham | A rating |
| Norton nurses ltd | Northampton | A rating |
| Norton Peskett | Lowestoft | A rating |
| Norton Rose Fulbright LLP | London | A rating |
| Norton Way Motors Ltd | Letchworth | A rating |
| NortonLifeLock UK Limited | London | A rating |
| Nortons Local Limited | Birmingham | A rating |
| Norvic Family Practice | Smethwick | A rating |
| Norvic Healthcare | Taverham | A rating |
| Norwegian YWCA | London | A rating |
| Norwegian Cruise Line Group UK Limited | Southampton | A rating |
| Norwegian Hull Club - London Branch | London | A rating |
| Norwegian YWCA | London | A rating |
| Norwest Foods International Ltd | Knutsford | A rating |
| Norwest Insurance Limited | Manchester | A rating |
| Norwich 1 Domiciliary Specsavers Limited | Werrington | A rating |
| Norwich Central Mosque and Islamic Community Centre | Norwich | A rating |
| Norwich City College of Further and Higher Education t/a City College Norwich | Norwich | A rating |
| Norwich City Council | Norwich | A rating |
| Norwich City Football Club plc | Norwich | A rating |
| Norwich High School for Girls | Norwich | A rating |
| Norwich Pound Lane Specsavers | Norwich | A rating |
| NORWICH RESTAURANT LIMITED | Norwich | A rating |
| Norwich School | Norwich | A rating |
| NORWICH SPINAL HEALTH LIMITED | CHESHIRE | A rating |
| Norwich University of the Arts | Norwich | A rating |
| Norwich Visionplus Limited TA Specsavers Opticians Ltd | Norwich | A rating |
| Norwood Grange Care Home | Sheffield | A rating |
| Norwood Green Family Dental Practice | Southall | A rating |
| Norwood House Nursing Home Ltd | Keighley | A rating |
| Norwood Medical Centre | Sheffield | A rating |
| Norwood Surgery | Southport | A rating |
| Norwyn Community Services Ltd | Sittingbourne | A rating |
| Nosakhari Ltd. | London | A rating |
| Nosara Capital Management Limited | London | A rating |
| Nosce Education Limited | London | A rating |
| Nosebleed Interactive Ltd | Newcastle upon Tyne | A rating |
| NOSHA INVESTMENTS LTD | Watford | A rating |
| NOSHAHI FOOD STORE LIMITED | HIGH WYCOMBE | A rating |
| Noshh Box Ltd | Heanor | A rating |
| NOSSH & CO LIMITED | Milton Keynes | A rating |
| Nostalgia Media Limited | Edinburgh | A rating |
| Nosto Solutions UK Ltd | London | A rating |
| NOSTOS COFFEE LTD | London | A rating |
| Nosuffering Limited | London | A rating |
| Nosy Crow Ltd | London | A rating |
| Not Actual Size Ltd | London | A rating |
| Not another Beer Co LTD | London | A rating |
| Not in the Guidebooks Limited | Harrow | A rating |
| Not Just Tickets Ltd t/a Plain | London | A rating |
| NOTANOTHERBILL Ltd | London | A rating |
| Noteable Logistics Ltd | Birmingham, West Midlands | A rating |
| Notedome Limited | Coventry | A rating |
| Notes: Music & Coffee Ltd | London | A rating |
| Notesco UK Limited | London | A rating |
| Noteus Partners UK LLP | London | A rating |
| NOTEWORTHY MANAGEMENT LTD | London | A rating |
| Nothern Enterprises Limited | Gateshead | A rating |
| NOTHING TECHNOLOGY LIMITED | London | A rating |
| Noticedesign Limited trading as The Design Solution | London | A rating |
| Notion Capital Managers LLP | London | A rating |
| NOTIUM LIMITED | Birmingham, | A rating |
| Notonthehighstreet Enterprises Ltd | Bristol | A rating |
| Notorious Sap Ltd t/a Dirty Bagels | London | A rating |
| Notpla Limited | London | A rating |
| Notre Dame de France | London | A rating |
| Notre Locus | London | A rating |
| Nott Edinburgh Ltd | Edinburgh | A rating |
| Notting Hill College Ltd | Salford | A rating |
| Notting Hill Community Church | LONDON | A rating |
| Notting Hill Finance Limited | London | A rating |
| Notting Hill Gate Filling Station Ltd | London | A rating |
| Notting Hill Genesis | London | A rating |
| Notting Hill Persia Limited | London | A rating |
| Notting Hill Preparatory School Limited | London | A rating |
| Notting Hill Spirit Ltd | London | A rating |
| Nottingham Building Society | Nottingham | A rating |
| NOTTINGHAM CARE VILLAGE LIMITED | NOTTINGHAM | A rating |
| Nottingham Cares Limited T/A Right at Home Nottingham | Nottingham | A rating |
| NOTTINGHAM CARS LIMITED | NOTTINGHAM | A rating |
| Nottingham City Council | Nottingham | A rating |
| Nottingham City GP Alliance Ltd | Nottingham | A rating |
| Nottingham City Transport Ltd | Nottingham | A rating |
| Nottingham CityCare Partnership CIC | Nottingham | A rating |
| Nottingham College | Nottingham | A rating |
| Nottingham Community Housing Association | Nottingham | A rating |
| Nottingham Energy Partnership | Nottingham | A rating |
| Nottingham Fish Monger Ltd | Nottingham | A rating |
| Nottingham food Corner LTD | Nottingham | A rating |
| Nottingham Forest Football Club Limited | Nottingham | A rating |
| Nottingham Forest Netball Club Ltd | Nottingham | A rating |
| Nottingham Forest Womens Football Club Limited | Nottingham | A rating |
| Nottingham Girls' High School | Nottingham | A rating |
| Nottingham Hindu Temple and Community Centre | Nottingham | A rating |
| Nottingham Hoods Limited | Wilford | A rating |
| Nottingham Liberal Synagogue | Nottingham | A rating |
| Nottingham Mencap | Nottingham | A rating |
| Nottingham Mobile Solutions Ltd | Nottingham | A rating |
| Nottingham Newmedica Ltd | Nottingham | A rating |
| Nottingham Panthers IHC | Nottingham | A rating |
| Nottingham Playhouse Trust Ltd | Nottingham | A rating |
| Nottingham Properties Limited | Grantham | A rating |
| Nottingham Rehab Ltd | Bardon | A rating |
| NOTTINGHAM ROMAN CATHOLIC DIOCESAN TRUSTEES | Nottingham | A rating |
| NOTTINGHAM RUGBY LIMITED | NOTTINGHAM | A rating |
| Nottingham Studios Ltd. | Nottingham | A rating |
| Nottingham Tamatanga Ltd | Nottingham | A rating |
| NOTTINGHAM TEXTILES GROUP LTD | NOTTINGHAM | A rating |
| NOTTINGHAM TRAVEL (UK) LTD | NOTTINGHAM | A rating |
| Nottingham Trent University - Human Resources | Nottingham | A rating |
| Nottingham University Hospitals NHS Trust | Nottingham | A rating |
| Nottingham Venues Limited | Nottingham | A rating |
| Nottingham VRP Food Co Ltd T/A Wingers | West Bridgford | A rating |
| Nottingham Wildcats Community Basketball and Sports Trust | Nottingham | A rating |
| Nottinghamshire County Council | Nottingham | A rating |
| Nottinghamshire County Cricket Club | Nottingham | A rating |
| Nottinghamshire Healthcare NHS Foundation Trust | Nottingham | A rating |
| Nottinghamshire Mind | Worksop | A rating |
| Nottizzon LTD | London | A rating |
| NOTTRAPP LTD TA WINGTRAPP | NOTTINGHAM | A rating |
| Notts County Football Club Limited | Nottingham | A rating |
| NOTTS EXPRESS LIMITED (14562639) | Nottingham | A rating |
| Notts Pharma UK Ltd | Nottingham | A rating |
| Notun Spice Corner Ltd T/A Bengal Spice | Sittingbourne | A rating |
| NOUBLES HEALTHCARE LIMITED | Newbury | A rating |
| Nouman Limited | London | A rating |
| Noumed Life Sciences Limited | Maidenhead | A rating |
| Nour Eddine Zilaoui t/a Fairuz | Dundee | A rating |
| Nourish (Scotland) | Edinburgh | A rating |
| Nourish Care Systems Ltd | Bournemouth | A rating |
| Nous Group (UK) Ltd | London | A rating |
| NOUS INFOSYSTEMS (UK) PVT. LTD | BRENTFORD | A rating |
| Nous Infosystems Pvt. Ltd. | Brentford | A rating |
| Nouveau Care Ltd | Norwich | A rating |
| Nouvelle Garde Limited | London | A rating |
| NOUVITA LIMITED | Bramfield | A rating |
| Nova Aerospace Ltd | Filton | A rating |
| Nova Beauty Ltd | Skegness | A rating |
| Nova Biochem Ltd | Nottingham | A rating |
| Nova Bioelectrics | Bromley | A rating |
| Nova Biomedical | Cheshire | A rating |
| NOVA CARE GROUP LTD | Peterborough | A rating |
| Nova Care Solutions Ltd | Walsall | A rating |
| Nova Centric Limited | NOTTINGHAM | A rating |
| Nova Duvera UK Limited | London | A rating |
| Nova Education Trust | Nottingham | A rating |
| NOVA EXPRESS | WHEATSTONE | A rating |