| Aetek Ltd | Berkeley | A rating |
| Aetha Consulting Limited | Cambridge | A rating |
| Aetha Design Studio Ltd | Poole | A rating |
| Aether Dental Ltd T/A Ambleside Dental Practice | Shrewsbury | A rating |
| AETHER FINANCIAL SERVICES UK LTD | LONDON | A rating |
| Aether Limited | Oxford | A rating |
| Aethos U.K. Limited | Cambridge | A rating |
| AETN INTERNATIONAL (UK) LIMITED | London | A rating |
| Aevitus Care Services Limited | Warminster | A rating |
| AEW UK Investment Management LLP | London | A rating |
| AF Accountants Ltd | London | A rating |
| AF APPLIANCES LIMITED | Ilford | A rating |
| AF ENTERPRISES LTD TA SAVILE TOWN SERVICE STATION | Dewsbury | A rating |
| AF Jones Stonemasons Ltd | Reading | A rating |
| AF Management Ltd | Liverpool | A rating |
| AF Mobile Accessories Ltd | Bristol | A rating |
| AF Payments Limited | London | A rating |
| AF PHARMA LTD | Glasgow | A rating |
| AF Pipes ltd | Pampisford | A rating |
| AF Tyres and Servicing | Rotherham | A rating |
| AFA Telecoms Limited | Blackburn | A rating |
| AFA TRAVEL LTD | Manchester | A rating |
| Afadlink International Resources UK LTD | Birmingham | A rating |
| AFC Asian Food Centre Limited | Hounslow | A rating |
| AFC Bournemouth Limited | Bournemouth | A rating |
| AFC Dunstable Limited | Dunstable | A rating |
| AFC Energy PLC | Cranleigh | A rating |
| AFC FOOD (UK) LIMITED | CROYDON | A rating |
| AFC- HALAL MEAT LTD | MIDDLESEX | A rating |
| AFD Food and Drink Limited T/A The Espy | Portobello | A rating |
| Afdhal Hussain Sanitary Contracting UK LTD | Wembley | A rating |
| AFE Group LTD | Swansea | A rating |
| AFENEL LIMITED | LONDON | A rating |
| Afeni Healthcare Limited | Bristol | A rating |
| Afentra UK Limited | London | A rating |
| AFerry Limited | Sutton Courtenay | A rating |
| Affect Media Limited | Stockpor | A rating |
| Affectionate Care Home Limited T/A Ersham House Nursing Home | Hailsham | A rating |
| Affectionate Healthcare Limited T/A Barons Down Nursing Home | Lewes | A rating |
| Affectiva UK Ltd | London | A rating |
| Afferent Software Limited | Brighton | A rating |
| Affiliate Intelligence | LONDON | A rating |
| Affiliated Managers Group Limited | London | A rating |
| AFFINIA HEALTHCARE LIMITED | Romford | A rating |
| Affinia Limited | Colchester | A rating |
| Affiniti AI Limited | London | A rating |
| Affinity (Shipping) LLP | London | A rating |
| Affinity (UK) Limited | Corby | A rating |
| Affinity Associates (Flemmings) Limited T/A Flemmings Chartered Accountants | Croydon | A rating |
| AFFINITY BUSINESS SERVICES LIMITED | Birmingham | A rating |
| Affinity Care | Shipley | A rating |
| Affinity Care and Support Services Ltd | Rainhill | A rating |
| AFFINITY CARE CONSORTIUM LTD | NOTTINGHAM | A rating |
| Affinity Care Management | Poole | A rating |
| Affinity Fire Engineering (UK) Limited | London | A rating |
| Affinity Fragrances Limited | Iver | A rating |
| Affinity Health at Work | London | A rating |
| Affinity Homecare Group Limited | Wilmslow | A rating |
| Affinity Laboratories Limited | London | A rating |
| AFFINITY LABS LTD | London | A rating |
| Affinity Sports Academy Ltd | Derby | A rating |
| Affinity Trust | Thame | A rating |
| Affinity Water | Hatfield | A rating |
| Affinius Capital UK Ltd | London | A rating |
| AFFIRM UK LTD | London | A rating |
| Affle (UK) Ltd. | London | A rating |
| Affleck Care Limited t/as , Caremark (Kirklees) | Huddersfield | A rating |
| Affluent Technology Limited | Coventry | A rating |
| Afford Bond Holdings Limited | Nantwich | A rating |
| AFFORD CARPETS LTD | Stoke-On-Trent | A rating |
| AFFORDABLE CAR CENTRE LTD | Bedford | A rating |
| Affordable Healthcare Ltd | Leicester | A rating |
| AFFORDABLE VALUED SOLUTIONS LTD | NEWTOWNARDS | A rating |
| Affric Limited | Inverness | A rating |
| Afg Mcr Ltd | Heywood | A rating |
| AFGHAN HOPE LANGUAGE SERVICES LIMITED | Bristol | A rating |
| Afghan Islamic and Culture Centre | London | A rating |
| Afghan Restaurant Limited T/A Shiraz Restaurant | Middlesex | A rating |
| Afghan Restaurant(Hull) Limited T/A Afghan Restaurant | Hull | A rating |
| Afghanistan and Central Asian Association (ACAA) | Feltham | A rating |
| AFGROMAN33 LTD | LONDON | A rating |
| AFH Accountants Ltd | Manchester | A rating |
| AFH Independent Financial Services Limited | Bromsgrove | A rating |
| AFH Stores UK Limited | London | A rating |
| AFI Uplift Ltd | Castle Donington | A rating |
| Afimilk UK Limited | Glasgow | A rating |
| Afin Bank Limited | London | A rating |
| Afiniti Europe Technologies Limited | London | A rating |
| AFIRE LTD | Ilford | A rating |
| Afishionados Ltd T/A Afishionados | Erith,Kent | A rating |
| AFK Creators Ltd | London | A rating |
| AFK FOODS LTD T/A SUBWAY | St Neots | A rating |
| AFK LONDON LTD T/A AL Farooq Kebabish | London | A rating |
| AFK Solutions Limited | St Albans | A rating |
| AFL (Fleet Management) Ltd | Slough | A rating |
| AFL Telecommunications UK Limited | Milton Keynes | A rating |
| Aflac Northern Ireland Ltd | Belfast | A rating |
| Aflak General Maintenance and Decoration LTD | London | A rating |
| Aflex Hose Limited | Huddersfield | A rating |
| Aflex Limited | Potters Bar | A rating |
| Aflorithmic Labs, Ltd. | London | A rating |
| AFM Consulting Limited | London | A rating |
| AFM Consulting Limited | Otley | A rating |
| AFOAKWA MARKET LTD | WALSALL | A rating |
| AFON GOCH CHILDREN'S HOMES LTD | DEINIOLEN | A rating |
| Afon Technology Ltd | Caldicot | A rating |
| AFONSOM LIMITED | Nottingham | A rating |
| AFP Assets Limited | London | A rating |
| AFR Bedford Limited | Bedford | A rating |
| afr2 Group Ltd | Birmingham | A rating |
| AFREEN SPICE LIMITED T/A | Gloucestershire | A rating |
| AFRICA ADVOCACY FOUNDATION | London | A rating |
| AFRICA BALKANS TRADE AND CULTURE CENTRE | MITCHAM | A rating |
| Africa Express Line Limited | West Malling | A rating |
| Africa Matters Limited | London | A rating |
| Africa New Energies Ltd | Surbiton | A rating |
| Africa Platforms Capital LLP | London | A rating |
| Africa Practice Limited | Harrow | A rating |
| Africa Risk Compliance Limited | London | A rating |
| Africa Services International | Bristol | A rating |
| Africa Specialty Risks Limited | London | A rating |
| African & Caribbean hut ltd | Birmingham | A rating |
| AFRICAN ARTS AND ADVICE CENTRE | London | A rating |
| African Books Collective | Oxford | A rating |
| African Caribbean Achievement Project | Bradford | A rating |
| African Centre for Development and Research | Brighton | A rating |
| African Cultural Development (ACD-ARTS) | Hackney | A rating |
| African Cultural Exchange t/a ACE dance and music | Birmingham | A rating |
| African Culture Arts and Sport Network | Romford | A rating |
| African Grocers Limited | Manchester | A rating |
| African Mamaput Limited | Birkenhead | A rating |
| African Night Fever CIC | Portslade | A rating |
| African Octopus Ltd | Deeside | A rating |
| African Palace Ltd | bristol | A rating |
| African Parks UK | London | A rating |
| African Peoples Historical Monument Foundation (Black Cultural Archives) Ltd | London | A rating |
| Africell UK Ltd | London | A rating |
| AFRIDI & SARDAR LTD | Ilford | A rating |
| AFRIDI ENTERPRISES LTD t/a London Butchers & Grocers | London | A rating |
| Afridi HD Ltd T/A Heavenly Desserts | Croydon | A rating |
| Afrika Tikkun UK | Egham | A rating |
| AFRIKANA | Cardiff | A rating |
| Afrikana Mile End | London | A rating |
| Afrikana Uxbridge | London | A rating |
| AFRIMEX (UK) LIMITED | Borehamwood | A rating |
| Afrisource LTD ta Walfinch Kingston & Weybridge | Walton On Thames | A rating |
| Afro and Caribbean Halal Meat Ltd | Harrow | A rating |
| Afro Beauty Centre Ltd | London | A rating |
| Afro Caribbean Beauty | London | A rating |
| AFRO CART LIMITED T/A? Afro Cart Foods | Portsmouth | A rating |
| AFRO COSMETICS LIMITED | Birmingham | A rating |
| Afro Foods Limited | London | A rating |
| AFRO GH SPICE LTD | Romford | A rating |
| Afro Hair & Cosmetics LTD | HIGH WYCOMBE, | A rating |
| AFRO INNOVATION GROUP | LEICESTER | A rating |
| AFRO MEGA GROCERY STORE LIMITED | Leicester | A rating |
| AFRO UK FOODS LTD | London | A rating |
| Afro Wight Ltd | Newport | A rating |
| Afro-Asian Insurance Services Limited | London | A rating |
| Afro-Bite on Demand LTD | Glasgow | A rating |
| Afro-European Business Services Ltd. | Greenock | A rating |
| AFRODITI KRASSA LTD | London | A rating |
| AFROZANTIX LTD | Enfield | A rating |
| AFRY Management Consulting Limited | Oxford | A rating |
| AFS & CO ACCOUNTANTS SCOTLAND LTD | Glasgow | A rating |
| AFS Dental Limited trading as Bishopsworth Dental Surgery | Bristol | A rating |
| Afs Fashion Ltd | Canvey Island | A rating |
| AFS Logistics Ltd | Cumbernauld | A rating |
| AFS Salisbury Ltd, t/as Asian Food Store | Salisbury | A rating |
| Afsana Foods (UK) Ltd | London | A rating |
| Afsana London Limited T/A Al Hikma | London | A rating |
| AFSAR TRAVELS LIMITED | London | A rating |
| Afsar Williams Solicitors | Telford | A rating |
| AFT Global UK Ltd | London | A rating |
| AFT Pharma UK Limited | London | A rating |
| AFTAB FOROZE CONSULTANCIES LIMITED | Bristol | A rating |
| AFTER 5 ENTERTAINMENT LIMITED | Bristol | A rating |
| AFTER HOURS BRISTOL LTD T/A NISA LOCAL | BRISTOL | A rating |
| AFTERCUTS LIMITED | Ilford | A rating |
| Afternoonify Ltd | St Albans | A rating |
| AFTERS ILFORD LTD | ilford | A rating |
| AFTERS WALTHAMSTOW LTD | london | A rating |
| Afterskills Limited | London | A rating |
| AFTON CHEMICAL LIMITED | BRACKNELL | A rating |
| Afton Fitness Limited, trading as Anytime Fitness | Feltham | A rating |
| AFX Mixing and Pumping Technologies Ltd | Poole | A rating |
| AFX Ventures Limited | London | A rating |
| AFYA CARE LTD | Bristol | A rating |
| AFYN HOLDINGS LTD | Nottingham | A rating |
| AFZA SALEEM LTD | Nottingham | A rating |
| Afzal Khokhar Property Company | London | A rating |
| AG Building and Fencing Ltd | Derby | A rating |
| AG Cars Loughborough Ltd | Loughborough | A rating |
| AG Consultancy & Apps Ltd | Slough | A rating |
| AG EXPRESS LTD | Stoke-On-Trent | A rating |
| AG Fitness Sports UK Ltd | Bolton | A rating |
| AG GLOBAL TRADING LIMITED | WEMBLEY | A rating |
| AG GRID LTD | London | A rating |
| AG GROUP (2026) LTD T/A The Royal Hotel | Cookstown | A rating |
| AG Instruments Ltd | Warwick | A rating |