| AN INTELLIGENT NETWORK LTD | London | A rating |
| AN MEDICS UK LTD | England | A rating |
| AN NEWS & CAFE LTD | Feltham | A rating |
| AN NUR LTD | Leeds | A rating |
| AN PATEL LIMITED | NUNEATON | A rating |
| AN Services ( Raynes Park) Ltd | London | A rating |
| AN Superstore Ltd | Manchester | A rating |
| An Tobar and Mull Theatre | Tobermory | A rating |
| AN Tyres & Company Ltd | Maidstone | A rating |
| AN-NAML INVENTIVE PREMIX LTD | LONDON | A rating |
| ANA CHILD MINDING SERVICES LTD | Hornchurch | A rating |
| ANA LIFESTYLE EXPRESS | Cleveland | A rating |
| ANAA LIMITED | EASTLEIGH | A rating |
| ANAA SECURITY LIMITED | London | A rating |
| Anaaqa London Limited | London | A rating |
| ANAAR ABERDEEN LTD | Kincardineshire | A rating |
| ANAAR KALI FABRICS LTD | Walthamstow | A rating |
| ANAARI LTD | BASINGSTOKE | A rating |
| Anaaya Ltd T/A Go Local Extra | Rainworth | A rating |
| ANABELA CHAN LIMITED T/A ANABELA CHAN JOAILLERIE | LONDON | A rating |
| ANABIA FOOD LTD | WORKINGTON | A rating |
| ANABIA TRANSPORTS LTD | ROMFORD | A rating |
| AnaCap Financial Partners Limited | London | A rating |
| Anacapa Wavepower Ltd. | London | A rating |
| Anaconda Equipment International | Dungannon | A rating |
| Anaconda Services (UK) Limited | Richmond, London | A rating |
| Anacott Steel Ltd | London | A rating |
| Anacta Strategies UK Ltd | London | A rating |
| Anaeko Limited | Belfast | A rating |
| Anaero Technology Ltd | Cambridge | A rating |
| Anaglyph Ltd | London | A rating |
| Anah Ltd | Burton-On-Trent | A rating |
| Anahad Kirtan Society | London | A rating |
| Anahita Rehabilitation Centre LLP | London | A rating |
| Anaiah Healthcare Ltd. | Broadstairs | A rating |
| Anaik Ltd T/A Ideal Stores | London | A rating |
| Anakata Wind Power Resources Ltd | Oxford | A rating |
| Analitika One Limited | London | A rating |
| Analog and Digital Solutions Limited | Kent | A rating |
| Analog Devices Limited | Newbury | A rating |
| AnalogFolk Limited | London | A rating |
| Analogue films ltd | London | A rating |
| Analysis Group Ltd | London | A rating |
| Analyst Ltd | Worcester Park | A rating |
| Analysys Mason Limited | London | A rating |
| Analytic Partners U.K. Limited | London | A rating |
| Analytica Inspection Limited | London | A rating |
| Analytics 8 LTD | London | A rating |
| Analytics Engines Limited | Belfast | A rating |
| Analytics Engines Ltd | Belfast | A rating |
| Analytics SEO Limited | Bramshott | A rating |
| Analytics SEO Limited (T/A Authoritas) | Bramshott | A rating |
| Analytics Sphere Ltd | London | A rating |
| Analytik Ltd | Cambridge | A rating |
| Analytium Ltd | London | A rating |
| Analyttica Datalab Private Limited | Reading | A rating |
| Anam Engineering LTD | London | A rating |
| ANAM HAIR & BEAUTY LIMITED | London | A rating |
| ANAM HEALTHCARE LIMITED | GLASGOW | A rating |
| Anami Construction Limited | Willenhall | A rating |
| ANAND INTERNATIONAL LTD | LEICESTER | A rating |
| Anand Nand Ltd. T/A Mister Singh's India | Glasgow | A rating |
| ANAND RATHI WEALTH UK LIMITED | London | A rating |
| Anand Sweets Ltd | Swindon | A rating |
| Ananda Bhavan Limited | London | A rating |
| Ananda Marga | London | A rating |
| Ananda Pharma plc | London | A rating |
| Anandam (London) | Upminster | A rating |
| ANANKAI LIMITED | Hayes | A rating |
| Anannya Stores | Haverfordwest | A rating |
| Anansi Technology Limited | London | A rating |
| ANANTA AYURVEDA LTD | Slough | A rating |
| Ananta Care Limited T/A YSguborwen Care Home | Aberdare | A rating |
| Anantham Foods Ltd | Milton Keynes | A rating |
| Anantharajah Nirosan T/A NIRO EXPRESS | Sidcup | A rating |
| Ananths Store | Hartlepool | A rating |
| ANANTYA GROUP LIMITED | Chedgrave | A rating |
| ANANYA FINE JEWELLERY & DESIGN LIMITED | London | A rating |
| Ananya IT Services Ltd | Brentwood | A rating |
| ANANYA RETAIL LTD | RIPON | A rating |
| Ananyaa Consulting Ltd | England | A rating |
| Anaphite | Bristol | A rating |
| Anaplan Limited | London | A rating |
| Anaqua Ltd. | London | A rating |
| Anar Management Limited | London | A rating |
| Anasa Ventures Limited T/A Fireaway | Birmingham | A rating |
| Anash Aarushi Ltd | Hereford | A rating |
| Anasma Ltd | Newcastle Under Lyme | A rating |
| ANASURIA HIBISCUS UK LIMITED | Aberdeen | A rating |
| Anasuria Operating Company Ltd | Aberdeen | A rating |
| ANATOLIA TURKISH BARBEQUE GRILL | COVENTRY | A rating |
| Anatomy Brands Ltd | London | A rating |
| Anavec Healthcare Solution Ltd | Southampton | A rating |
| Anavo Care Ltd | Leatherhead | A rating |
| Anavrin Beauty Limited | Surrey | A rating |
| Anaya Enterprises Pvt Ltd | Glasgow | A rating |
| ANAYA INTERNATIONAL LTD | LONDON | A rating |
| ANAYA INVESTMENT LONDON LTD | London | A rating |
| Anaya NF Ltd | Surbiton | A rating |
| ANB DISTRIBUTIONS LTD | Southall | A rating |
| ANBALAGAN PERUMAL T/A BP SERVICE STATION | Buntingford | A rating |
| ANC Premium Services Limited | Ickenham | A rating |
| ANC Scaffolding Products Ltd | Egham | A rating |
| Ancala Partners LLP | London | A rating |
| ANCASTER CONVENIENCE STORE LTD | Grantham | A rating |
| ANCEP LTD | London | A rating |
| ANCER RECRUITMENT LTD. | Manselton | A rating |
| Ancestry.com UK Limited | London | A rating |
| ANCHALISTA THEIVENDRAM T/A CHILTON CONVENIENCE STORE | FERRYHILL | A rating |
| Anchanto Ltd | Weybridge | A rating |
| Ancho Fareham Limited | Fareham | A rating |
| Ancho's Restaurants Ltd | Oban | A rating |
| Anchor & Hope Care Services L | London | A rating |
| Anchor & Scepter Associates Ltd | London | A rating |
| ANCHOR BOOKHAM LTD | LEATHERHEAD | A rating |
| Anchor Care and Education Limited | Melton Mowbray | A rating |
| Anchor Care and Education Ltd | Bury St. Edmunds | A rating |
| Anchor Catering Limited | Kent | A rating |
| Anchor Community Support Ltd | Bristol | A rating |
| Anchor Door Systems | London | A rating |
| Anchor Financial Advisory Limited | Southampton | A rating |
| Anchor Foster Care Services Limited | Kent | A rating |
| Anchor Hanover Group | Bradford | A rating |
| Anchor Informatics Ltd | London | A rating |
| Anchor Nursing and Social Care Limited | Dunfermline | A rating |
| Anchor Private Clients (UK) Limited | London | A rating |
| ANCHOR SERVICE STATION | KENT | A rating |
| ANCHOR STORES LIMITED | Bristol | A rating |
| Anchor Support Services Ltd | Strood | A rating |
| Anchor Teaching Ltd | London | A rating |
| ANCHOR TRANSPORT UK LTD | Coventry | A rating |
| Anchorage Capital Advisors Europe LLP | London | A rating |
| Anchorage Capital Europe LLP | London | A rating |
| ANCHORAGE CHAMBERS LTD | SALFORD | A rating |
| Anchors Healthcare Services Limited | Ipswich | A rating |
| Anchuka Limited | Highams Park | A rating |
| Anchusa Care Limited | Hitchin | A rating |
| ANCI GROUP LIMITED | Ollerton | A rating |
| Ancile Insurance Group Ltd | London | A rating |
| ANCOATS CAR SALES LIMITED | Manchester | A rating |
| Ancoats Care Homes Limited | London | A rating |
| Ancora Medical Practice | Scunthorpe | A rating |
| Ancory UK Ltd | London | A rating |
| ANCRE HILL ESTATES | MONMOUTH | A rating |
| AND Automation Limited | Ilkeston | A rating |
| AND Designs Limited | Kingston Upon Thames | A rating |
| And So To Bed Ltd | London | A rating |
| And Stores Limited | Ystrad Mynach | A rating |
| AND Technology Research Limited | Epping | A rating |
| Anda House Ltd | Wembley | A rating |
| Andaaz Pan Centre Limited | London | A rating |
| ANDAIR LIMITED | Portsmouth | A rating |
| Andalus | Glasgow | A rating |
| Andaman Surgery | Lowestoft | A rating |
| Andaria Financial Services UK Limited | London | A rating |
| Andaz Hotel | London | A rating |
| andBloom Limited | London | A rating |
| Andcrafted Ltd | London | A rating |
| Anderbury Limited | Llandudno | A rating |
| Anders Electronics plc | Slough | A rating |
| Anders Heating Company Ltd | Thame | A rating |
| Andersen LLP | London | A rating |
| ANDERSENLAB LTD | London | A rating |
| Anderson & Sheppard Limited | London | A rating |
| ANDERSON BRECON UK LIMITED | CARDIFF | A rating |
| Anderson Commercials Ltd | Coalville | A rating |
| Anderson Green Ltd | Notingham | A rating |
| Anderson Law LLP | Wallingford | A rating |
| Anderson Mori & Tomotsune UK Limited | London | A rating |
| Anderson Pig Farms Limited | Cookstown | A rating |
| Anderson Ross Accounting and Tax Limited | London | A rating |
| Anderson Shaw | Harrow | A rating |
| Anderson Wilde and Harris | London | A rating |
| Anderson Young Aviation Limited | Surrey | A rating |
| Andesign | Sutton Coldfield | A rating |
| Andhra Bhavan Wellington Place Limited (T/A) Andhra Bhavan Limited | Belfast | A rating |
| Andi Builders Ltd | London | A rating |
| ANDICA LTD | HIGH WYCOMBE | A rating |
| ANDigital Limited | London | A rating |
| ANDIL BROTHERS LIMITED | WATFORD | A rating |
| Andile Homecare LTD | Gloucester | A rating |
| ANDJAN LIMITED | Brixham | A rating |
| ANDMU CARE SERVICES LIMITED | Colchester | A rating |
| Andor Technology | Belfast | A rating |
| Andora Group LTD | London | A rating |
| Andosa Ltd T/A Calabrisella Cathays | Cardiff | A rating |
| Andover Care Limited | Andover | A rating |
| Andover Cricket Club | Southampton | A rating |
| Andover Kebab & Pizza House Ltd | Andover | A rating |
| Andover Pallets Ltd | Andover | A rating |
| Andover Parish | Andover | A rating |
| Andover Retail Ltd | Cheltenham | A rating |
| Andover Service Station (ESSO) | Andover | A rating |
| ANDOVER TRAILERS LIMITED | Hampshire | A rating |
| ANDOVER VARIETY STORE LTD | Andover | A rating |
| Andra Health Ltd | Derby | A rating |
| Andras House Limited | Belfast | A rating |
| Andrea &Adrian Food & Wine | Beckenham | A rating |
| Andrea Healthcare | Ipswich | A rating |
| ANDREAS KOUNNIS LIMITED | WOODFORD GREEN | A rating |