| Artemis Origination Limited | London | A rating |
| Artemis Technologies Ltd | Poole | A rating |
| Artemisia Global Capital Limited | London | A rating |
| ARTEN DESIGN LTD | Coventry | A rating |
| ARTERA LTD | London | A rating |
| Artesian Transformational Leadership Ltd | Oxford | A rating |
| Artezzan | chester | A rating |
| Artfacts.net Ltd | London | A rating |
| Artfarm Limited | London | A rating |
| Artfix Ltd | London | A rating |
| Artform Architects | Manchester | A rating |
| ArtGeorge Care Services | Portsmouth | A rating |
| Artgo ltd | London | A rating |
| Arth PVT Limited | Croydon | A rating |
| Artheal Limited | London | A rating |
| ARTHI SUPERMARKET LTD | Basildon | A rating |
| Arthington Ventures | Otley | A rating |
| Arthrex Limited | Sheffield | A rating |
| Arthur Ashe Consultants Limited | London | A rating |
| Arthur Consultancy Services Ltd | Norwich | A rating |
| Arthur D. Little | London | A rating |
| ARTHUR DAYNE LTD T/A MUNCHIES | Worcester | A rating |
| Arthur J Gallagher UK Limited | London | A rating |
| Arthur J. Gallagher Services (UK) Limited | London | A rating |
| ARTHUR MORRISON LTD T/As AM CARE SERVICES | Barking | A rating |
| ARTHUR STREET STORE LTD | Blairgowrie | A rating |
| ARTI Care Homes (Gloucester) Limited | Gloucester | A rating |
| Artichoke Heart Limited | London | A rating |
| Artichoke Trust | London | A rating |
| Artickl Ltd | London | A rating |
| ARTICLE 19 | London | A rating |
| ARTICULATE COMMUNICATIONS AGENCY LTD | London | A rating |
| Articulate International Ltd | Moreton in Marsh | A rating |
| Artifex Creative Webnet Ltd | London | A rating |
| Artifex Interior Systems Limited | Solihull | A rating |
| ARTification | London | A rating |
| Artificial Intelligence Digital Solutions Limited | Milton Keynes | A rating |
| ARTIFICIAL INTELLIGENCE MONITORING GROUP LTD | Hitchin | A rating |
| Artificial Labs Limited | London | A rating |
| Artificial Lift Performance Limited | Edinburgh | A rating |
| Artificial Societies Ltd | London | A rating |
| Artifin Accountants Limited | London | A rating |
| Artigiano Espresso Bars limited | Exeter | A rating |
| ARTIO CARBON LIMITED | London | A rating |
| ARTIONIS (UK) Limited | London | A rating |
| Artios Pharma Limited | Cambridge | A rating |
| Artis Mensa Ltd | London | A rating |
| Artis Works Ltd | London | A rating |
| Artisan Cake Limited | Purley | A rating |
| Artisan Furniture Ltd | Manchester | A rating |
| Artisan Furniture Ltd T/A BED4US | Leeds | A rating |
| ARTISAN LEITH LIMITED | Edinburgh | A rating |
| ARTISAN ONE PLUS LTD | London | A rating |
| Artisan Partners UK LLP | London | A rating |
| Artisan Roofing Limited | Edinburgh | A rating |
| ARTISAN VAPOR OLDBURY LTD | Oldbury | A rating |
| ARTISANAL TEA CO LTD | London | A rating |
| Artisanne Limited | Liverpool | A rating |
| ARTISANS OF SARDINIA LTD | London | A rating |
| Artisio Limited | London | A rating |
| Artist Promotion Management Ltd | London | A rating |
| ARTISTIC BEAUTY CLINIC LTD | Southampton | A rating |
| Artistic Beauty LTD | Southampton | A rating |
| Artistic Global Ltd T/A Cafe Lavista | LONDON | A rating |
| Artistic Spaces Limited | London | A rating |
| ARTISTRY BEAUTY LTD | Aylesbury | A rating |
| ARTISTRY ITALIAN FASHION LTD | LONDON | A rating |
| Artistry Production LTD | London | A rating |
| Artists' Collecting Society CIC | London | A rating |
| Artitect Ltd | London | A rating |
| Artius Designs Limited | London | A rating |
| ARTKOF ENTERPRISE LIMITED | Exeter | A rating |
| ARTLIST UK LIMITED | Norwich | A rating |
| Artlogic Media Limited | London | A rating |
| ARTNEER LIMITED | Manchester | A rating |
| Artond Ltd | Leicester | A rating |
| Artorius Wealth Ltd | Manchester | A rating |
| ArtReview Ltd | London | A rating |
| Arts & Disability Forum | Belfast | A rating |
| ARTS & SCIENCES LONDON LIMITED | LONDON | A rating |
| Arts at the Mill CIC T/A The Old Courts | Wigan | A rating |
| Arts Council England | Manchester | A rating |
| Arts Educational School London | London | A rating |
| Arts Factory Ltd | Ferndale | A rating |
| Arts Media Worldwide Ltd | London | A rating |
| Arts University Bournemouth | Poole | A rating |
| Arts University Plymouth | Plymouth | A rating |
| Artsadmin | London | A rating |
| ARTSBRIDGE LIMITED | LONDON | A rating |
| Artsermon Ltd T/A Bionicare | Great Denham | A rating |
| ArtsLans Urban Ltd | London | A rating |
| Artusi (Peckham) Limited | Chertsey | A rating |
| Artvisor Ltd | London | A rating |
| ARTYSTONE LLP | London | A rating |
| ARU Recruitment Ltd T/A ARU Homecare | Hull | A rating |
| ARU Spa Ltd | London | A rating |
| ARUBA (UK) LIMITED | SOUTAMPTON | A rating |
| Arubah Healthcare Limited | Newport | A rating |
| ARUF GROUP LTD | Rochdale | A rating |
| ARUK Global Ltd | Leamington Spa | A rating |
| ARUKS LTD T/A LONDON ROAD STORES | BEDFORD | A rating |
| Arulanantham Ramasamy And Swarna Arulanantham Trading As Fambrough Post Office And Convenience Store | Kent | A rating |
| Aruloan Ltd | Swansea | A rating |
| ARULOLI LTD | Carshalton | A rating |
| ARULRASA THIYAGARASA T/A HOBBS HILL CONVENIENCE STORES | Hemel Hempstead | A rating |
| Arum System Ltd | London | A rating |
| Arumarunthu Rajeevan | Wrexham | A rating |
| Arumugam Jayaratnam t/a Abi Madu Convenience Store | Penshaw | A rating |
| ARUMUGAM VIJENDIRAN SANJAY | ABERDEEN | A rating |
| ARUMUKAM SIVARAMANAN TRADING AS TA SMOKEYS OFF LICENCE | CRAWLEY | A rating |
| ARUN CAPITAL LTD | Coventry | A rating |
| Arun DC | Littlehampton | A rating |
| Arun Jewellery London Ltd | Harrow | A rating |
| ARUN SERVICES LTD t/a ESS0 | Cannock | A rating |
| Arun Sharma Chemists Limited | Southampton | A rating |
| Arun sole trader | Nottingham | A rating |
| Arun Theiventhiraraja T/A Cherry Lane Store | Liverpool | A rating |
| Arun Veterinary Group | Storrington | A rating |
| Aruna Gamage Ltd | Winscombe | A rating |
| Aruna Moola Ltd | Glasgow | A rating |
| Arundel Advisers LLP | London | A rating |
| Arundel Care Services | Worthing | A rating |
| Arundel Domiciliary Care Services | Worthing | A rating |
| Arundel Group Limited ("AGL") | Weybridge | A rating |
| Arundel Park Lodge | Brighton | A rating |
| ARUNDEL SPICE HOUSE LTD | Arundel | A rating |
| Arundell Arms Hotel Company Ltd | Lifton | A rating |
| Arura Group Ltd | Nottingham | A rating |
| Arusuvai Express Limited T/A Arusuvai Express | Coventry | A rating |
| ARUSUVAI RESTAURANTS LIMITED T/A Arusuvai Restaurant | Leeds | A rating |
| ARUTH UK LTD | Coventry | A rating |
| Arutun Ltd | London | A rating |
| Aruvi Express Limited T/A Aruvi Express | Coventry | A rating |
| ARUVR Limited | London | A rating |
| Arva AI Ltd | London | A rating |
| Arval UK Group Limited | Swindon | A rating |
| Arvato SCM UK Limited | Coleshill | A rating |
| ARVE GLOBAL LIMITED | Bournemouth | A rating |
| ARVEEN FOOD & WINE LTD | Doncaster | A rating |
| Arvent Estates Ltd | Luton | A rating |
| Arvi Associates Limited | Hampshire | A rating |
| Arvi Construction Ltd | Egham | A rating |
| Arvia Water Technologies Ltd | Runcorn | A rating |
| Arvin Stores LTD | Hemel Hempstead | A rating |
| Arvonia Veterinary LTD | Cheltenham | A rating |
| Arvy Consultancy (UK) Limited | Maidenhead | A rating |
| ARW Investments LTD T/A Snowdrop Dental Clinic | Dundee | A rating |
| ARWAS SUPERMARKET LTD | Acton | A rating |
| Ary Halal Meat London Limited | London | A rating |
| Arya Consultancy Ltd. | Hemel Hempstead | A rating |
| Arya House Ltd | Birmingham | A rating |
| ARYA METALWORKS LIMITED | London | A rating |
| ARYA SAMAJ LONDON | LONDON | A rating |
| Aryaka Networks UK Limited | Hayes | A rating |
| Aryal's Catering Limited T/A Gurkha Aroma | Bolsover | A rating |
| Aryan Associates Ltd | CAMBERLEY | A rating |
| ARYAN BUILDERS LTD | LUTON | A rating |
| ARYAN FOODS LICHFIELD LTD T/A Pepes | Lichfield | A rating |
| ARYAN GARAGES LTD T/A CENTRAL AVENUE SERVICE STATION | NUNEATON | A rating |
| Aryan Heating & Electrics Limited | Mitcham | A rating |
| Aryan Herbals Ltd | London | A rating |
| ARYAN INDUSTRIES (UK) LTD | Leicestershire | A rating |
| ARYAN NIRYA LTD | Northamptonshire | A rating |
| Aryan Oxford Ltd T/A Spice Lounge | Oxford | A rating |
| ARYANS CONVENIENCE LTD | MANCHESTER | A rating |
| Aryav Limited | Coventry | A rating |
| Aryzta Bakeries UK Ltd. | Dunstable | A rating |
| Arz Construction Ltd | Thornton Heath | A rating |
| ARZ DESIGN AND CONSTRUCTION LTD | London | A rating |
| ARZ Superstore Ltd | Uxbridge | A rating |
| ARZANA LIMITED - T/A Pepe's | London | A rating |
| AS (WALES) LTD T/A PREMIER | Llanharry | A rating |
| AS & CO LAW FIRM LTD | London | A rating |
| AS Aerospace Limited | Denham | A rating |
| AS Associates (GB) Limited | Wembley | A rating |
| AS AUTOFIX LIMITED | Mitcham | A rating |
| AS builders (Nottingham) limited | Nottinghamshire | A rating |
| As Builders Mcr Ltd | Rochdale | A rating |
| AS Chamoli Ltd | Essex | A rating |
| AS CHILTERN HOMECARE LTD | Chesham | A rating |
| AS CITIZEN ADVICE AGENCY | North London Business Park | A rating |
| AS Concert Violins Ltd | London | A rating |
| AS Construction Group Ltd | Birmingham | A rating |
| AS COURIERS U.K. LIMITED | Bilston | A rating |
| AS COVENTRY LTD T/A Accountancy Solutions | Coventry | A rating |
| AS CUEVAS LANDSCAPING & DESIGN LTD | Gillingham | A rating |
| AS Equity Partners UK Limited | London | A rating |
| AS Facade & Fire Protection Specialists Ltd | Wirral | A rating |
| AS Fast Foods Ltd | Dundee | A rating |
| AS FOODS ANGUS LIMITED T/A Steeple Fish Bar | Kirriemuir | A rating |
| AS Foreign Education Consultants Limited | Birmingham | A rating |
| AS Gallery Ltd t/a Achille Salvagni Atelier | London | A rating |
| AS Greenford Heating and Plumbing (UK) Limited | Greenford | A rating |
| AS HILLINGDON HOMECARE LIMITED T/A CAREMARK HILLINGDON | Hillingdon | A rating |
| AS Hyde Ltd | Hyde | A rating |
| AS London Shoreditch Operations B.V. | London | A rating |
| AS MARYLEBONE LIMITED | London | A rating |
| AS Medicare Ltd | Fareham | A rating |
| As News and Convenience Store | Nottingham | A rating |
| AS Properties | London | A rating |