| AG IT Consultancy Limited | Amersham | A rating |
| AG LAW LTD | London | A rating |
| AG Paving and Building Products Ltd | Fivemiletown | A rating |
| AG Propinvest Ltd. | London | A rating |
| AG Surveying Limited | Ware | A rating |
| AG Technologies LTD | London | A rating |
| AG UK 2018 Limited | London | A rating |
| AG Worldwide Missions | Aberdare | A rating |
| AG1 UK Enterprise Ltd | Northampton | A rating |
| Aga & Ola Massage & Beauty Ltd | Glasgow | A rating |
| AGA ACCOUNTANTS LIMITED | ILFORD | A rating |
| Aga Estates Ltd | Walsall | A rating |
| Aga Khan Foundation (United Kingdom) | London | A rating |
| AGA Recruitment Solutions lTD | Bournemouth | A rating |
| AGA01 Limited | Edinburgh | A rating |
| AGAL RETAIL LTD | Nuneaton | A rating |
| AGAL Wellbeing Services | Ilford | A rating |
| Agam Consulting Service Limited | Staines-Upon-Thames | A rating |
| AGANALYST LIMITED | London | A rating |
| Aganor Limited | Leeds | A rating |
| Agape Care Solutions Ltd | POOLE | A rating |
| AGAPE CHRISTIAN ASSEMBLY | LUTON | A rating |
| Agape Family Ministries | Birmingham | A rating |
| AGAPE for All Nations Ministries International Ltd | Edinburgh | A rating |
| AGAPE HEALTHCARELIMITED | BIRMINGHAM | A rating |
| AGAPE INTERNATIONAL CHRISTIAN CENTRE | BRADFORD | A rating |
| Agape Ministries Ltd | Birmingham | A rating |
| Agape Multi Academy Trust | Reading | A rating |
| Agape Superbe Care Ltd | Luton, Bedfordshire | A rating |
| AGAR HYGIENE LIMITED | Loughborough | A rating |
| AGAR IRONMONGERY DESIGN & MARKETING CONSULTANCY LIMITED | London | A rating |
| Agaricus Robotics Ltd | Lincoln | A rating |
| Agasco Limited | Cheltenham | A rating |
| Agata London Ltd T/A Elephant and Castle Food and Wine | Waterloo | A rating |
| Agate Properties Limited | London | A rating |
| Agate Pvt Ltd | Watford | A rating |
| AGATEGOLD LTD T/A RAJ JEWELS | WEMBLEY | A rating |
| AGAV LTD | Leicester | A rating |
| Agave Capital Management Limited | London | A rating |
| AGB Limited | London | A rating |
| AGC Chemicals Europe, Ltd. | Thornton Cleveleys | A rating |
| AGC EQUITY PARTNERS LTD | LONDON | A rating |
| AGC Glass UK Limited | Northampton | A rating |
| AGC TELECOMS LTD. | Luton | A rating |
| Agco Limited | Stoneleigh | A rating |
| AGD Equipment Limited | Stratford upon Avon | A rating |
| AgDevCo Limited | London | A rating |
| AGDP HOLDINGS LIMITED | Huntly | A rating |
| Age NI | Belfast | A rating |
| Age Partnership Limited | Leeds | A rating |
| Age UK | London | A rating |
| Age UK Kensington & Chelsea | London | A rating |
| Age UK Lambeth | LONDON | A rating |
| Age UK Stockport | Stockport | A rating |
| Age UK Wirral | Wirral | A rating |
| Ageas Insurance Limited | Eastleigh | A rating |
| AgeCare MG2 Ltd | Colchester | A rating |
| AGECOURT LIMITED | Harpenden | A rating |
| Agee Care Limited | Stoke-On-Trent | A rating |
| AGEMA ENGINEERING LTD | COVENTRY | A rating |
| Agemco Limited | Canterbury | A rating |
| Agemco Ltd | Kent | A rating |
| AGEMO AI LTD | Cheshire | A rating |
| Agence France-Presse | London | A rating |
| AGENCIA EFE,S.A. | London | A rating |
| Agency 41 Ltd | London | A rating |
| Agency Delta Ltd | London | A rating |
| Agency Inc Ltd | London | A rating |
| Agency Management Ltd | Berkhamsted | A rating |
| AGENCY SOFTWARE WORLDWIDE LTD | HADLOW | A rating |
| Agency Unknown | London | A rating |
| Agenda 21 Architects Studio Ltd | London | A rating |
| Agenda Boxes & Packaging Ltd | Nelson | A rating |
| AGENDA MEDIA LIMITED | MANCHESTER | A rating |
| Agenda Resource Management Limited | Hull | A rating |
| Agendi Ltd | London | A rating |
| Agent Marketing | Liverpool | A rating |
| Agent Paid Limited | London | A rating |
| Agent Software Limited | Manchester | A rating |
| Agentis Capital Advisors UK Limited | London | A rating |
| Agents For Accounting Ltd | London | A rating |
| Agents' Mutual Ltd | London | A rating |
| Agenvo LTD | Bromley | A rating |
| AGENZIA 14 (INTERNATIONAL) LIMITED | Stockport | A rating |
| AGES AGO LIMITED | Sheffield | A rating |
| AGESAN LIMITED | Melksham | A rating |
| AGF INTERNATIONAL LOGISTICS LTD | Ilford | A rating |
| Agfa Healthcare IT UK Limited | Uxbridge | A rating |
| Agfa NV | Ilkeston | A rating |
| AgFe Management Limited | London | A rating |
| AGG Developments (NW) Ltd | Liverpool | A rating |
| AGG UK Limited | London | A rating |
| AGGA Solution Limited | Surbiton | A rating |
| AGGARWAL & CO LIMITED | Gillingham | A rating |
| AGGARWAL ASSOCIATES LTD | Birmingham | A rating |
| aggregate developments ltd | cheltenham | A rating |
| Aggregate Holdings Limited T/A Holistic Care Services | Liverpool | A rating |
| Aggregate Intelligence Limited | Liverpool | A rating |
| Aggreko UK Limited | Cannock | A rating |
| Aggtech UK Ltd | Liverpool | A rating |
| AGH Heating & Building Ltd | Coventry | A rating |
| Aghni Cafe and Restaurant | Devon | A rating |
| AGHOSH UK | MANCHESTER | A rating |
| AGI World Ltd T/as Spark | London | A rating |
| AGIC UK Limited | London | A rating |
| AGICAP UK LIMITED | London | A rating |
| Agile 101 Consulting Ltd | Reading | A rating |
| AGILE AMIGOS LTD | MILTON KEYNES | A rating |
| Agile Analog Limited | Cambridge | A rating |
| Agile and IT Digital Services Limited | Brentford | A rating |
| Agile Applications Limited | Manchester | A rating |
| Agile Business Consortium | Ashford | A rating |
| Agile Care Services Ltd | Peterborough, | A rating |
| AGILE COACHING FOR PERFORMANCE LTD | Birmingham | A rating |
| Agile Collective Ltd | Oxford | A rating |
| Agile Consultancy Services Limited | Ilford | A rating |
| Agile Cyber Solutions Limited | London | A rating |
| Agile Engineering Consultancy Ltd | Frognall | A rating |
| AGILE FILMS LIMITED | LONDON | A rating |
| Agile Guarding Services Limited | Bolton | A rating |
| Agile Info Solutions Limited | Milton Keynes | A rating |
| Agile Kinetic Limited | Newport | A rating |
| Agile Logistics Ltd | Nottingham | A rating |
| Agile London Limited | London | A rating |
| Agile Solutions (GB) Ltd | Milton Keynes | A rating |
| Agile Wings Limited | Brentford | A rating |
| AGILE360 PROJECT MANAGEMENT CONSULTING SERVICES LIMITED | Leigh | A rating |
| AgileBits UK Ltd trading as 1Password | Cambridge | A rating |
| AGILEDNA CONSULTANCY LTD | Staines | A rating |
| AGILENT TECHNOLOGIES LDA UK LIMITED | Cheshire | A rating |
| AgileRL Ltd | London | A rating |
| AGILETS UK LIMITED | HARROW | A rating |
| Agilexi Limited | London | A rating |
| Agilia Infrastructure Partners Limited | London | A rating |
| Agilico Workplace Technologies | London | A rating |
| Agilio Software Bidco Ltd. | Sheffield | A rating |
| Agilisys Holdings Ltd | Wigan | A rating |
| Agilitas Partners LLP | London | A rating |
| Agilite Solutions Ltd | London | A rating |
| Agility Children Residential Care Ltd | London | A rating |
| Agility Physio Ltd | London | A rating |
| AGILITY PR SOLUTIONS LIMITED | Watford | A rating |
| Agility3 Limited | Hitchin | A rating |
| Agilysis Ltd | Banbury | A rating |
| Agilysys UK Ltd | Windsor | A rating |
| Agilyx EMEA Limited | Reading | A rating |
| Agincare Enable Limited | Portland | A rating |
| Agincare Homes Holdings Limited | Portland | A rating |
| Agincare Live-In Management Services | Portland | A rating |
| Agincare UK Limited | Castletown | A rating |
| Agincourt Trading Limited | London | A rating |
| Aginergy Limited | Parkway | A rating |
| Agio AI UK Limited | Belfast | A rating |
| Agio Ratings Limited | London | A rating |
| AGIS Autogas Ltd | Bradford | A rating |
| AGISHAN LIMITED | Stoke-On-Trent | A rating |
| Agito Global Limited | Huntingdon | A rating |
| AGK Partnership Limited | London | A rating |
| AGKI GROUP LTD | Erith | A rating |
| AGL Care Ltd | Witham | A rating |
| AGL Legal LTD | Burnley | A rating |
| Aglionby ADR Limited | London | A rating |
| AGM autocentre Ltd | London | A rating |
| AGM Developments Ltd | Manchester | A rating |
| AGMK Capital Limited T/A Em Sherif Restaurant | London | A rating |
| AGN PRIVATE LTD | Quedgeley | A rating |
| Agnes and Arthur Limited | Stoke on Trent | A rating |
| Agnes Foods International Ltd | Leicester | A rating |
| Agnew Investments Ltd | Dorset | A rating |
| Agnewlight Limited T/A Travelfinders and Dagenham Travel | Dagenham | A rating |
| Agnidev Limited | Ripley | A rating |
| Agnieszka Acar Limited | Maidstone | A rating |
| AGNNI RETAILS LTD | Southampton | A rating |
| AGODA INTERNATIONAL PTE LTD | London | A rating |
| Agoe Empowerment Network CIO | LONDON | A rating |
| AGORA CONSTRUCTION SERVICES LTD | London | A rating |
| Agora Global Ltd | Manchester | A rating |
| Agora Restaurants Ltd | Cambridge | A rating |
| Agora Solutions Ltd | Redditch | A rating |
| Agora Talent Limited | Wallington | A rating |
| AGP ACCOUNTANTS LTD | London | A rating |
| AGP Sustainable Real Assets Limited | London | A rating |
| AGPAYTECH LTD. | London | A rating |
| AGR Law Ltd | Leicester | A rating |
| AGR PIZZA LTD | Reading | A rating |
| AGR Renewables Limited | London | A rating |
| Agra Coningsby Limited | Lincoln | A rating |
| Agra Horncastle Limited | Lincolnshire | A rating |
| Agracare Limited Trading as Home Instead Romford | Romford | A rating |
| Agrade Community Care Services Ltd | Chesterfield | A rating |
| Agrapo Limited | London | A rating |
| Agratas Limited | London | A rating |
| Agree2Act Ltd | West Malling | A rating |
| AgreementsDesk Limited | London | A rating |
| Agreena Technology Limited | London | A rating |
| AgReserves, Ltd. | Cambridgeshire | A rating |
| Agreus Limited | London | A rating |
| Agri Castle Ltd | London | A rating |
| Agri Fruit Ltd | Somerset | A rating |
| Agri- Food and Biosciences Institute | Belfast | A rating |