| *+ Ltd | Information & communication | 2004 |
| 0800 Homefix Ltd | Construction | 2021 |
| 0LAX Ltd | Professional & scientific | 2009 |
| 1 Stop Build Shop Ltd | Construction | 2025 |
| 100BILLION786 Ltd | Wholesale & retail | 2025 |
| 119 Taunton Road Limited | Real estate | 2024 |
| 121 Taunton Road Limited | Real estate | 2024 |
| 123 KMG Shop Ltd | Wholesale & retail | 2023 |
| 123 Visuals Group Ltd | Professional & scientific | 2018 |
| 12SHRI Ltd | Hospitality | 2026 |
| 14 Eardley Crescent Management Limited | Other services | 1995 |
| 15-18 Vale Close Limited | Households | 2003 |
| 1565 Developments Limited | Financial services | 2015 |
| 164 New Road Management Company Limited | Households | 2014 |
| 199 Hollydale Road RTM Company Ltd | Real estate | 2014 |
| 1A Care Services Limited | Health & social care | 2025 |
| 1ST National Developments Limited | Real estate | 2001 |
| 1ST Stop Building & Renovations Ltd | Construction | 2026 |
| 1ST Stop Building Services Ltd | Construction | 2018 |
| 1TOUCH Productions Limited | Information & communication | 2019 |
| 23 Northlands Street Management Company Limited | Professional & scientific | 2010 |
| 24 Heating Limited | Construction | 2009 |
| 2BUSY2IRON (Bracknell) Limited | Other services | 2013 |
| 2EWS Properties Limited | Real estate | 2021 |
| 316 Welding & Fabrication Ltd | Manufacturing | 2020 |
| 345 Construction Ltd | Construction | 2021 |
| 3J Property Services Ltd | Real estate | 2019 |
| 3M Asia Pacific UK Holding Ltd | Financial services | 2015 |
| 3NEA Construction Ltd | Construction | 2021 |
| 4 Paws and Pals Ltd | Other services | 2018 |
| 4 Sight International Limited | Information & communication | 2020 |
| 4-SIGHT Event Management Ltd | Administrative & support | 2002 |
| 44 Finsbury Road RTM Company Ltd | Households | 2024 |
| 4COURT Solutions Limited | Manufacturing | 2006 |
| 4DYNAMICS Corporation Limited | Administrative & support | 2010 |
| 4FRONT Electrical Ltd | Manufacturing | 2016 |
| 4KUPS Ltd | Hospitality | 2026 |
| 58 HWR Management Company Limited | Households | 2020 |
| 5SENSES Hospitality Limited | Administrative & support | 2016 |
| 6SIGMADC Limited | Professional & scientific | 2004 |
| 725 Logistic Group Ltd | Transport & logistics | 2026 |
| 786 FH Group Limited | Information & communication | 2025 |
| 7MS Ltd | Information & communication | 2018 |
| 7TIER Consultancy Ltd | Information & communication | 2026 |
| 80/20 Financial Control Solutions Ltd | Professional & scientific | 2024 |
| A & I Oriental Foods Limited | Wholesale & retail | 2025 |
| A and J Projects Ltd | Real estate | 2024 |
| A D Shirley Ltd | Construction | 2006 |
| A Dust of Flour and Sugar Ltd | Hospitality | 2021 |
| A J Ballard Consulting Limited | Professional & scientific | 2015 |
| A K Munro Property Limited | Households | 2025 |
| A K Smart Repairs Limited | Professional & scientific | 2018 |
| A P Q Properties Limited | Construction | 2010 |
| A Plus Security & Network Limited | Other services | 2024 |
| A Thai Tale Limited | Manufacturing | 2025 |
| A&J Landscapes Ltd | Administrative & support | 2023 |
| A&O Corsaire Ltd | Information & communication | 2015 |
| A&O IT Group PLC | Financial services | 2017 |
| A&O IT Services Limited | Transport & logistics | 2012 |
| A&O Shared Solutions Limited | Information & communication | 2018 |
| A&T Air Conditioning and Refrigeration Limited | Construction | 2016 |
| A&T Caring Services Ltd | Health & social care | 2015 |
| A&T Interior Solutions Limited | Construction | 2019 |
| A&T Rental Properties Limited | Real estate | 2020 |
| A&U Services Limited | Information & communication | 2017 |
| A&W Demolition (Bracknell) Ltd | Construction | 2023 |
| A-Team Rendering Ltd | Construction | 2010 |
| A. and G. Structures Limited | Manufacturing | 1979 |
| A.B. (Technical) Limited | Professional & scientific | 1998 |
| A.K. General Builders Limited | Construction | 1996 |
| A.L.T.Taylor & Co.Limited | Real estate | 1964 |
| A.M.A Brickwork Limited | Construction | 2017 |
| A.V.S.S Limited | Professional & scientific | 2006 |
| A1 Serviced Apartments Ltd | Hospitality | 2019 |
| A4A Driving School Ltd | Education | 2022 |
| A4A Traders Ltd | Wholesale & retail | 2021 |
| AA Screeding Ltd | Construction | 2026 |
| AAF Painting Group Ltd | Construction | 2025 |
| AAK Pizza Ltd | Hospitality | 2026 |
| AAP Kingston Ltd | Professional & scientific | 2017 |
| AAR Homes Limited | Real estate | 2018 |
| AB Automation Limited | Administrative & support | 2011 |
| AB Group Financial Services Limited | Administrative & support | 1986 |
| AB SAP Services Limited | Information & communication | 2011 |
| ABA Build Ltd | Construction | 2022 |
| Abaas Services Ltd | Construction | 2024 |
| Abacom Media LLP | | 2025 |
| Abacus Drinks Ltd | Professional & scientific | 2016 |
| Abbatt Dual Management Limited | Professional & scientific | 2018 |
| Abbatt Group Limited | Extraterritorial | 1987 |
| Abbatt Property Recruitment Limited | Extraterritorial | 2018 |
| Abbatt Property Services Limited | Extraterritorial | 2001 |
| Abbatt Recruitment Consultants Limited | Extraterritorial | 1987 |
| Abby Normal Limited | Information & communication | 2024 |
| ABC Exec Limited | Transport & logistics | 2020 |
| ABC Health Solution Limited | Public administration | 2022 |
| ABC Mobile Creche Limited | Other services | 2010 |
| Aber Homes Ltd | Real estate | 2023 |
| Abercrest Ltd | Real estate | 2023 |
| Aberwillow Ltd | Real estate | 2025 |