| Anchormind Diagnostics Ltd | Farnham | 2025 |
| Anchors AID Limited | London | 2023 |
| Anchortest Ltd | London | 2015 |
| Ancient and Reborn Orphics Ltd | London | 2024 |
| Ancient Crafts Limited | High Wycombe | 2010 |
| Ancient Recipes Limited | Hessle | 1992 |
| Ancla Developments Limited | Southampton | 2025 |
| Ancla Living Limited | Southampton | 2025 |
| Ancona Assets Ltd | London | 2021 |
| Ancra International Limited | Leek | 1972 |
| Ancs Investments Limited | Grimsby | 2024 |
| AND Architecture Ltd | Southwick | 1998 |
| AND Become Limited | Virginia Water | 2021 |
| AND Business Services Limited | Reading | 1996 |
| AND Trade Company Ltd | London | 2014 |
| AND Your Dog Productions Limited | Edinburgh | 2010 |
| Anda Homes Ltd | Keston | 2021 |
| Anda International Limited | Beckenham | 2024 |
| Andale Limited | London | 2015 |
| Andalusia Hire Services Limited | Lowestoft | 2015 |
| Andalusia Telecom Limited | Manchester | 2014 |
| Andeana Ltd | Bradford | 2025 |
| Andeantraders Ltd | London | 2023 |
| Andele Vallarta Ltd | London | 2021 |
| Andell Charles Limited | London | 2021 |
| Anders Properties Limited | Gloucester | 2005 |
| Andersen Harvey Lake and Company Limited | Birmingham | 1983 |
| Andersen International Brand Holdings Group Limited | London | 2014 |
| Andersen VA Ltd | Bognor Regis | 2019 |
| Andersen's Scooter- OG Sveiseverksted Limited | London | 2022 |
| Anderson & Shepherd Limited | Staffordshire | 2002 |
| Anderson Abercromby Veterinary Referrals Limited | York | 2011 |
| Anderson Acoustics Trustees Limited | London | 2018 |
| Anderson Associates (Consultancy) Limited | Worthing | 2001 |
| Anderson Building Company Ltd | Strathpeffer | 2013 |
| Anderson Carriage Company Limited | Aldershot | 2010 |
| Anderson Chance Limited | London | 2006 |
| Anderson Phillips Limited | Maidstone | 1997 |
| Anderson Roots Limited | Bristol | 2020 |
| Anderson Ross Consulting Limited | London | 1999 |
| Anderson Systems Limited | Colchester | 2009 |
| Anderson Wright Technology Co., Ltd | Beckenham | 2020 |
| Andersons Investments Limited | Manchester | 1996 |
| Andiamo Business Limited | Harpenden | 2021 |
| Andiamo Marine Ltd | London | 2024 |
| Andika Limited | High Wycombe | 2023 |
| Andika.Com Limited | High Wycombe | 2023 |
| Andill House Property Company Limited | Durham | 2020 |
| Andimac Ltd | London | 2015 |
| Andino Furniture Co., Ltd | Kington | 2021 |
| Andradaluk Limited | Coventry | 2018 |
| Andragogy Leaders Limited | London | 2021 |
| Andrasta Holdings Ltd | Rochdale | 2025 |
| Andrax Enterprises Ltd | London | 2011 |
| Andre Films Ltd | Surrey | 2016 |
| Andrea Baker Consulting Limited | Farnborough | 2021 |
| Andrea Deborah Allick Ltd | London | 2024 |
| Andrea Dixon Writes Limited | London | 2023 |
| Andrea Fuchs Ltd | Manchester | 2023 |
| Andrea Ltd | Harrow | 2026 |
| Andrea Reitano Ltd | London | 2015 |
| Andrea Schwager Ltd | Manchester | 2023 |
| Andrea Stanford | Tonbridge | 2024 |
| Andreas Alexander & Co. Limited | Woodford Green | 2025 |
| Andreas Alexander Limited | Woodford Green | 2025 |
| Andreas Anna Alexander Ltd | Woodford Green | 2025 |
| Andreas Hennig Arborist Limited | London | 2025 |
| Andreassen NOR Limited | London | 2021 |
| Andreassen-Fix Invest Limited | London | 2025 |
| Andrei Batchkar Ltd | Hampton | 2024 |
| Andrei Iulian Mihai Limited | Lincoln | 2024 |
| Andrella Grapes Designs Ltd | Chadwell Heath | 2019 |
| Andrena Co-Invest Nominees Limited | London | 2025 |
| Andrew and Christopher Goodfellow Limited | Witney | 2025 |
| Andrew Barclay Locomotives Limited | Tamworth | 2004 |
| Andrew Bryan Sexton Limited | Norwich | 2025 |
| Andrew Clark Beverage Consultancy Limited | London | 2022 |
| Andrew Cleminson Ltd | Twickenham | 2014 |
| Andrew Cowan Motorsports Limited | Berwickshire | 2004 |
| Andrew Daniel Limited | Leeds | 2013 |
| Andrew Devine Limited | Burton-On-Trent | 2021 |
| Andrew Dudley Limited | Wirral | 2011 |
| Andrew Dyson Ltd | Huddersfield | 2024 |
| Andrew Edward Butler Limited | Braunton | 2025 |
| Andrew Eric Thacker Unlimited | Chesterfield | 2025 |
| Andrew Foods Limited | Lisburn | 1974 |
| Andrew Goode TV Limited | Fareham | 2015 |
| Andrew Grey Funeral Directors Ltd | Nottingham | 2014 |
| Andrew Grima Limited | Chelmsford | 2017 |
| Andrew Hamilton & Co Limited | Edinburgh | 2014 |
| Andrew Hart Property Group Ltd. | London | 2019 |
| Andrew Holt Limited | Lincoln | 2012 |
| Andrew Howe GAS Service and Repair Ltd | Hereford | 2011 |
| Andrew James Bespoke Limited | Leeds | 2013 |
| Andrew James Carpentry Limited | Melton Mowbray | 2021 |
| Andrew James Lovatt Ltd | Ilkley | 2024 |
| Andrew James Ltd | Benfleet | 2021 |
| Andrew James Morgan Ltd | Fraserburgh | 2024 |
| Andrew James Spencer Ltd | Kington | 2024 |
| Andrew John Gibbs Limited | Bognor Regis | 2024 |