| Alcova Asset Management LLP | London | A rating |
| Alcral Money Market One A LLP | London | A rating |
| Alcumus Holdings Ltd | Nantgarw | A rating |
| ALD Support Limited | Egham | A rating |
| Aldanat care services Aldanat Community Hub | Essex | A rating |
| ALDANAT CARE SERVICES, Aldanat Community HubThe Street | Essex | A rating |
| ALDAWOODIA LTD | Manchester | A rating |
| Aldbourne Nursing Home Ltd. | Marlborough | A rating |
| ALDBROOK LIMITED T/A JALSA GHAR | Dunmow | A rating |
| Aldbrough Convenience Store | Aldbrough Hull | A rating |
| Alde Care Ltd | Farnham | A rating |
| Aldeburgh Dental Practice | Aldeburgh | A rating |
| Aldeburgh Vets Ltd | Hacheston | A rating |
| Aldeia Impact Advisory Ltd. | London | A rating |
| ALDELIA LTD | London | A rating |
| ALDEN REPAIRS & MAINTENANCE LTD | London | A rating |
| Alder Grange Ltd | Stoke-on-Trent | A rating |
| Alder Hey Childrens NHS Foundation Trust | Liverpool | A rating |
| Alder Road Practice | Poole | A rating |
| Alder Rose Mortgage Services LTD | Runcorn | A rating |
| Aldergate Medical Practice | Tamworth | A rating |
| Alderley Analytical Ltd | Macclesfield | A rating |
| Alderley Lighthouse Labs Ltd | CHEADLE | A rating |
| Aldermans Pharmacy (London) Ltd. | London | A rating |
| Aldermoor Surgery | southampton | A rating |
| Aldermore Group PLC | Manchester | A rating |
| ALDERSGATE ARMS LIMITED | Clacton-On-Sea | A rating |
| Aldersgate Holding Company Limited | London | A rating |
| Alderson Digital Ltd | London | A rating |
| Alderson Ltd T/A Libertas | LOUTH | A rating |
| Alderton Accountancy Ltd | Ilford | A rating |
| Alderwood Medical Practice | CANNOCK | A rating |
| ALDGATE ELECTRICAL & BUILDING MAINTENANCE LTD | London | A rating |
| Aldgate Hotel OpCo Limited trading as Hotel Saint | London | A rating |
| Aldgate House Dental Care | London | A rating |
| ALDGATE OPCO LIMITED t/a THE CORNER LONDON CITY | LONDON | A rating |
| Aldi Stores Limited | Atherstone | A rating |
| Aldia Technologies LTD | LONDON | A rating |
| Aldingbourne Cottage | Aldingbourne | A rating |
| Aldo Fabrication Ltd | Daventry | A rating |
| Aldo's Dessert Bar | Shotts | A rating |
| Aldonai Logisitics Ltd | Nottingham | A rating |
| ALDOR SOLUTIONS LTD | Daventry | A rating |
| Aldridge Accident & Repair Centre Limited | Walsall | A rating |
| Aldridge Cricket Club | Walsall | A rating |
| Aldridge Education | London | A rating |
| Aldridge Food Co (DK) Limited T/A Wingers Aldridge | West Midlands | A rating |
| ALDRIDGE TRADING LTD T/A Papa Johns Pizza | Coventry | A rating |
| Aldro School Educational Trust Limited | Godalming | A rating |
| ALDUS ACCOUNTANTS LIMITED | Romford | A rating |
| Aldus Capital Limited | Winchester | A rating |
| Ale and Aloo Limited | Manchester | A rating |
| ALE UK Ltd | London | A rating |
| ALEA CONSTRUCTIONS LIMITED | London | A rating |
| Alec Jarrett Limited | Bristol | A rating |
| Alec Reed Academy | Northolt | A rating |
| Alec Waugh and Associates | Newcastle Upon Tyne | A rating |
| Alecto Conveyancing Limited | London | A rating |
| Alectris UK Limited | London | A rating |
| ALEED LIMITED | Cardiff | A rating |
| Aleees UK Ltd | London | A rating |
| ALEES TROPICAL RAGS LTD | Smethwick | A rating |
| Aleezay Hair & Cosmatics Ltd | London | A rating |
| ALEEZAY LIMITED | GANTS HILL | A rating |
| Alegria Polo Limited | Ascot | A rating |
| Aleksha Care Limited T/A Dalling House | Crowborough | A rating |
| Alem Ltd | Alresford | A rating |
| Alenia Consulting UK Limited | London | A rating |
| Aleph Capital Partners (Services) Limited | London | A rating |
| Aleph Commodities Ltd | London | A rating |
| Aleph Libros Limited | London | A rating |
| Aleph Strategies Limited | London | A rating |
| Alerion UK Limited | Bromborough | A rating |
| Aleron Fire Protection Limited | Milton Keynes | A rating |
| Aleron Partners Limited | Farnham | A rating |
| Alert Logic UK LTD | Cardiff | A rating |
| Alertacall Ltd | Windermere | A rating |
| Alertray Limited | London | A rating |
| Alessi Restaurant Limited | Stoke-on-Trent | A rating |
| Alesund Ltd | London | A rating |
| ALETHEIA ACADEMY LTD | Birmingham | A rating |
| Aletheia Anglican Academies Trust | Gravesend | A rating |
| ALETHIOMICS LIMITED | OXFORD | A rating |
| Aleti Software Systems Ltd | Newcastle Upon Tyne | A rating |
| Alevio Consulting Limited | Birmingham, | A rating |
| ALEX ACHEAMPONG FOUNDATION | BASIGNSTOKE | A rating |
| Alex Begg & Co | Ayr | A rating |
| Alex Building Services (UK) Limited | London | A rating |
| ALEX CAR ELECTRIC AND MECHANICAL LTD | Bristol | A rating |
| Alex Colquhoun Ltd | Montrose | A rating |
| Alex De Silva & Co Limied | London | A rating |
| Alex Dumitrache Limited | Burford | A rating |
| Alex KYK Limited t/a Happy Hot Pot | Edinburgh | A rating |
| Alex UK Ltd | Uxbridge | A rating |
| Alex Wenham Limited | Oxford | A rating |
| Alex, The Leukodystrophy Charity | London | A rating |
| ALEX'S PLAICE LIMITED | Wootton | A rating |
| Alexa Capital Services LLP | London | A rating |
| ALEXANDER & ELAI LTD | Acton | A rating |
| Alexander Belle Consultants | London | A rating |
| Alexander Court Nursing Home Limited | Sheffield | A rating |
| Alexander Daniels Global | Birmingham | A rating |
| Alexander decor ltd | London | A rating |
| Alexander Dennis Limited | Larbert | A rating |
| Alexander Duckham & Co Limited | Batley | A rating |
| Alexander Edward James Consulting Limited | London | A rating |
| Alexander Grace Law | Lytham | A rating |
| Alexander House Care Home - Cheltenham | Cheltenham | B rating |
| Alexander House Nursery | Wandsworth | A rating |
| Alexander J MacNeil | Isle of Barra | A rating |
| Alexander James (Hotel & Commercial Projects) Ltd. | Twyford | A rating |
| Alexander James Contracts Ltd | Uxbridge | A rating |
| ALEXANDER MALTBY LTD | LONDON | A rating |
| Alexander Mann Solutions Limited | London | A rating |
| Alexander Martin Architects Limited | LONDON | A rating |
| Alexander Miller Limited | London | A rating |
| Alexander Myerson & Co Limited | Liverpool | A rating |
| Alexander Owen Consultants Ltd | Milton Keynes | A rating |
| Alexander Park Homes Limited | Farnborough | A rating |
| Alexander Proudfoot (Europe) Ltd. | London | A rating |
| Alexander Rose Ltd | Burgess Hill | A rating |
| Alexander Taylor (Bakeries) Limited | Strathaven | A rating |
| Alexander Technologies Europe Limited | Peterlee | A rating |
| Alexander Wallace Healthcare LTD | MARGATE | A rating |
| Alexander Ward LTD | London | A rating |
| Alexander Whitley Dance Company | Ipswich | A rating |
| ALEXANDER-CHURCHILL ACCOUNTANTS | CHESHAM | A rating |
| Alexander's Mental Health Ltd | Farnborough | A rating |
| ALEXANDERS DENTAL PRACTICE | ESSEX | A rating |
| Alexandra & Crestview Surgeries | Lowestoft | A rating |
| Alexandra Court Residential Home | Leeds | A rating |
| Alexandra Lodge Care Home Limited | Manchester | A rating |
| Alexandra Montessori Limited | Hounslow | A rating |
| Alexandra Nursing home | Poulton Le Fylde | A rating |
| Alexandra Park Home Limited | London | A rating |
| Alexandra Rose Residential Care Home | Portsmouth | A rating |
| ALEXANDRA SPECIALIST CARE LIMITED T/A BROOKLANDS NURSING & CARE HOME | BLACKPOOL | A rating |
| Alexandra Steed URBAN Ltd | London | A rating |
| Alexandra Stores | Llandudno | A rating |
| ALEXANDRA SWEET HOTEL LIMITED TA ALEXANDRA HOTEL | Blackpool | A rating |
| Alexandretta Ltd | East Sussex | A rating |
| Alexandros Greek Restaurant | Carlisle | A rating |
| Alexi Overseas Education Consultancy and Service Ltd. | Newcastle Upon Tyne | A rating |
| ALEXIA ESTATES MANAGEMENT LIMITED | Luton | A rating |
| ALEXIA MARINE LTD | Manchester | A rating |
| Alexis Ashot Ltd | London | A rating |
| ALEXISKATTYS KITCHEN LTD | Salford, Manchester | A rating |
| ALEXZA BECK LIMITED | Beckenham | A rating |
| Aleyah House Limited | Huddersfield | A rating |
| ALEYNA GROUP RESTAURANTS LTD | Airdrie | A rating |
| ALF (Aquatic Distributors) Ltd | Bedford | A rating |
| Alfa Autos Ltd | Hitchin | A rating |
| ALFA CONSTRUCTION BIRMINGHAM LIMITED | Birmingham | A rating |
| ALFA DENTAL LIMITED T/A SEAHAVEN DENTAL PRACTIC | EAST SUSSEX | A rating |
| Alfa Energy Limited | London | A rating |
| Alfa Financial Software Ltd | London | A rating |
| ALFA HOME EXTENSIONS LTD | High Wycombe | A rating |
| Alfa Hotels Limited | Chorley | A rating |
| Alfa Laval Ltd | Camberley | A rating |
| Alfa Laval Ultrasonics UK Limited | Coventry | A rating |
| Alfa Management NW Ltd | Oldham | A rating |
| ALFA PHYSIO CLINIC LTD | Manchester | A rating |
| ALFA PHYSIO LIMITED | Derby | A rating |
| ALFA SOPHIA PLUMBING & HEATING LTD | STAINES -UPON - THAMES | A rating |
| Alfa8 Partners LLP | London | A rating |
| Alfalaah Scotland | Glasgow | A rating |
| ALFAMETRICS LTD | London | A rating |
| Alfanar | LONDON | A rating |
| Alfanar Energy Ltd | London | A rating |
| ALFANUM UK LTD | SUTTON-IN-ASHFIELD | A rating |
| Alfasigma UK Limited | Cambridge | A rating |
| ALFAZ TRADING LTD | London | A rating |
| Alfendo Ltd T/A JTA Travel | Birmingham | A rating |
| Alfie & Amanda Limited | Sidcup,Kent | A rating |
| ALFIE ELECTRICIAN LTD | BLACKBURN | A rating |
| Alfie Hyde | Shurlock Row | A rating |
| Alfie Medical Ltd | LONDON | A rating |
| ALFIE'S FISH BAR AND KEBAB | MAIDSTONE | A rating |
| ALFIHA LTD | Gerrards Cross | A rating |
| ALFOODS LTD | Birmingham | A rating |
| ALFOR AVIATION AND TECHNICAL SERVICES LIMITED | Bournemouth | A rating |
| Alford Group of Doctors | Alford | A rating |
| Alfred and Victoria Ltd | Birmingham | A rating |
| Alfred Cheyne Engineering Ltd | Turriff | A rating |
| Alfred Franks & Bartlett plc | London | A rating |
| Alfred H Knight Holdings Ltd | Prescot | A rating |
| Alfred James & Co Solicitors LLP | South Croydon | A rating |
| Alfred Wholesale Limited | Witney | A rating |
| Alfreds Bar & Grill | pontypridd | A rating |
| Alfriston School | Beaconsfield | A rating |
| ALFU LIMITED | BRISTOL | A rating |
| ALG Biogas Ltd | Omagh | A rating |
| AlgaeCytes Limited | Sandwich | A rating |
| ALGAN LTD | London | A rating |
| Algbra FS UK Limited | London | A rating |
| Algbra Group Limited | Manchester | A rating |
| Algebris (UK) Limited | London | A rating |
| Algeco UK Limited | Stockton-on-Tees | A rating |
| Alghad Ltd | Glasgow | A rating |
| ALGHAD TV LIMITED | London | A rating |