| 00004606 Limited | Professional & scientific | 1869 |
| 123 E-Filing Limited | Information & communication | 2016 |
| 1723XYZ Limited | Administrative & support | 2024 |
| 3'S a Crowd Brewing Ltd | Manufacturing | 2016 |
| 3ROC Ltd | Information & communication | 2015 |
| 5 Star Blouch Limited | Other services | 2025 |
| 7ACTIVE Ltd | Manufacturing | 2012 |
| 810 Limited | Professional & scientific | 2012 |
| A & B Installations Limited | Extraterritorial | 2007 |
| A & D Sturdy Limited | Construction | 2006 |
| A & JM Bunting Limited | Agriculture & fishing | 2008 |
| A & T Penny Ltd | Other services | 2015 |
| A Year of Dates Limited | Wholesale & retail | 2019 |
| A-Star Domestic and Commercial Services Ltd | Administrative & support | 2020 |
| A. Patel & Co (NW) Limited | Professional & scientific | 2003 |
| A.N.M. Powell Engineering Limited | Extraterritorial | 2007 |
| Aasi Traders Ltd | Wholesale & retail | 2026 |
| Abbey Thermosets Limited | Extraterritorial | 1998 |
| ABC Surgical Limited | Health & social care | 2010 |
| Abdul Wahab Ltd | Wholesale & retail | 2026 |
| ACA (Midlands) Holdings Limited | Financial services | 2022 |
| ACA Developments Limited | Construction | 2016 |
| Academic Smart Cities UK Ltd | Information & communication | 2024 |
| Acare Leisure Ltd | Wholesale & retail | 2006 |
| Acceleris Limited | Financial services | 2000 |
| Ackerley Projects Limited | Construction | 2019 |
| Action Training (Stoke) Ltd | Real estate | 2002 |
| Adam Car Sales Ltd | Wholesale & retail | 2024 |
| ADB Freight Solutions Limited | Transport & logistics | 2018 |
| Addison Grange RTM Company Limited | Households | 2021 |
| Adelphi SD Limited | Administrative & support | 2002 |
| Advanced Animations (UK) Limited | Information & communication | 2011 |
| Advanced Retail Solutions Ltd | Wholesale & retail | 2011 |
| Affirmative Finance Limited | Financial services | 2004 |
| Agave Thieves Ltd | Wholesale & retail | 2016 |
| Agnus Projects Limited | Professional & scientific | 2004 |
| Aion Engineering Limited | Manufacturing | 2016 |
| AIX of London Ltd | Hospitality | 2019 |
| AK International Supplies Ltd | Wholesale & retail | 2018 |
| Aklimate Ltd | Other services | 2020 |
| ALB Wholesale Limited | Wholesale & retail | 2021 |
| ALI SS Ltd | Wholesale & retail | 2026 |
| Allcots Development Company | Real estate | 2019 |
| Alport Properties Limited | Real estate | 1999 |
| Anchor Building Company Limited | Administrative & support | 1978 |
| Anchorage Retail Ltd | Wholesale & retail | 2025 |
| Andrew R. Hall & Co. Ltd | Administrative & support | 2015 |
| Andy Lythgoe Limited | Construction | 2014 |
| Angel Bar & Grill Limited | Hospitality | 2020 |
| Anmol Optical Ltd | Health & social care | 2022 |
| Annabelle Craven Limited | Real estate | 2024 |
| Anno Distillers Limited | Manufacturing | 2011 |
| ANT Moda Ltd | Wholesale & retail | 2024 |
| Antar Information Technology Limited | Information & communication | 1984 |
| Anwaar Sons Advance Links Ltd | Wholesale & retail | 2022 |
| Apex Motors (Oldham) Ltd | Wholesale & retail | 2003 |
| Apparel Services Ltd | Wholesale & retail | 2022 |
| APR Electrical Distributors Limited | Wholesale & retail | 2006 |
| Arcam Developments Management 1 Ltd | Construction | 2017 |
| Archie Craven Properties Limited | Real estate | 2000 |
| Archrye Limited | Professional & scientific | 2007 |
| ARM Prime Commerce Limited | Wholesale & retail | 2026 |
| Armoc Plastics Limited | | 1976 |
| Artevinum Wines and Spirits Ltd | Administrative & support | 2024 |
| Ascot Doors Ltd | Manufacturing | 1981 |
| Ashridge Equipment Hire Limited | Administrative & support | 2007 |
| Ashworth Energy Limited | Construction | 2022 |
| Assume the Feeling Ltd | Real estate | 2023 |
| Atom Action Limited | Information & communication | 2014 |
| Atul Agro Techno Limited | Manufacturing | 2009 |
| Auric Vibes Ltd | Wholesale & retail | 2025 |
| Autohaus (UK) Limited | Wholesale & retail | 1990 |
| Avalanche Creative Limited | Administrative & support | 2005 |
| Avidity Data Consultancy Limited | Information & communication | 2017 |
| Avsv Limited | Professional & scientific | 2014 |
| Ayak Actuarial Services Ltd | Financial services | 2020 |
| B & B Private Hire Ltd | Transport & logistics | 2003 |
| B & C Holt Ltd. | Health & social care | 1999 |
| Baby Magnet Ltd | Wholesale & retail | 2024 |
| Ballistic Moon Ltd | Information & communication | 2014 |
| Barberr Limited | Wholesale & retail | 2025 |
| Basbiz Consult Ltd | Administrative & support | 2018 |
| Basic - Brain and Spinal Injury Centre Limited | Health & social care | 1985 |
| Bcgy Company Limited | Real estate | 2020 |
| Bebe Investments Limited | Wholesale & retail | 2004 |
| Bedrock Mining Corporation Limited | Information & communication | 2014 |
| Beechrowe Development Limited | Real estate | 2006 |
| Benchmark Plumbing and Heating Services Limited | Construction | 2009 |
| Best UK Deals Ltd | Wholesale & retail | 2016 |
| Better Parenthood Ltd | Health & social care | 2022 |
| Bexley Barbers Limited | Other services | 2025 |
| Big Interior Services Limited | Other services | 2009 |
| Bikezaar Limited | Information & communication | 2017 |
| Bird and Beer Ltd | Hospitality | 2021 |
| Bizarre Holdings Limited | Financial services | 2020 |
| BJ Unwin Forestry Consultancy Ltd | Agriculture & fishing | 2019 |
| Black Stone Hub Ltd | Wholesale & retail | 2026 |
| Bloomy Brooms Ltd | Administrative & support | 2024 |
| Blue Horizon (PVT) Limited | Health & social care | 2019 |
| Blue Moon Cafe (Sheffield) Limited | Hospitality | 2003 |