| A&R LCD Limited | Financial services | 2021 |
| A&R Old Town Limited | Wholesale & retail | 2025 |
| A&R Regent Limited | Wholesale & retail | 2025 |
| A&R Retail Group Limited | Wholesale & retail | 2024 |
| A&R Rooms Ltd | Real estate | 2020 |
| A&R Services (ESW) Limited | Construction | 2009 |
| A&S Keynsham Limited | Hospitality | 2020 |
| A&S Property Rentals Ltd | Real estate | 2024 |
| A&Tt Trading Company Ltd | Wholesale & retail | 2024 |
| A&V Galaxy Limited | Other services | 2021 |
| A&V Property Investments Ltd | Real estate | 2024 |
| A&W (Electrical) Ltd | Construction | 2015 |
| A&Y Equipment Group Limited | Professional & scientific | 2013 |
| A-B 247 Ltd | Transport & logistics | 2012 |
| A-Class Clearance Ltd | Transport & logistics | 2020 |
| A-Drill.Uk Limited | Construction | 2013 |
| A-Gas (ORB) Limited | Professional & scientific | 2011 |
| A-Gas (UK) Limited | Water & waste | 1992 |
| A-Gas Bidco Limited | Financial services | 2017 |
| A-Gas Electronic Materials Limited | Wholesale & retail | 1994 |
| A-Gas International Limited | Administrative & support | 1986 |
| A-Gas Investments Limited | Professional & scientific | 2006 |
| A-Gas Limited | Extraterritorial | 1993 |
| A-K (Bristol) Ltd | Hospitality | 2018 |
| A-List Promotions Ltd | Administrative & support | 2026 |
| A-One Deal Bristol Ltd | Wholesale & retail | 2023 |
| A-Z Mobility Ltd | Wholesale & retail | 2025 |
| A. & K. Holdings Limited | Real estate | 1971 |
| A. D. Adams & Co Ltd | Financial services | 2024 |
| A. D. Gittins Ltd | Arts & recreation | 2004 |
| A. Govservices Limited | Public administration | 2021 |
| A. Marshall Consulting Limited | Professional & scientific | 2007 |
| A. O. Boobe Ltd | Professional & scientific | 2019 |
| A. P Utility Services & Groundworks Limited | Construction | 2018 |
| A. P. Autocare Limited | Wholesale & retail | 2006 |
| A. Pennyworth Ltd | Arts & recreation | 2023 |
| A. Rafael Advisory Ltd | Other services | 2026 |
| A. Wring Group (Demolition Co.) Limited | Construction | 1979 |
| A.A.S. Training Limited | Education | 1997 |
| A.B.S./ Elbrow Limited | Construction | 1993 |
| A.C Hair Loss Bristol Limited | Other services | 2025 |
| A.D Brickwork Developments Limited | Construction | 2003 |
| A.D Solutions Associates Ltd | Construction | 2012 |
| A.D.D. Plant (Bristol) Limited | Construction | 2016 |
| A.E.HORDER(1963)LIMITED | Financial services | 1963 |
| A.E.Horder(Contracting)Limited | Construction | 1965 |
| A.E.R. Stafford Limited | Manufacturing | 2009 |
| A.E.T. Freso Limited | Professional & scientific | 2006 |
| A.E.T. Transport Services Limited | Transport & logistics | 1989 |
| A.F.Drew (Construction) Limited | Construction | 1967 |
| A.G. Sansum & Sons Limited | Agriculture & fishing | 1977 |
| A.H.Dahir Transport Limited | Transport & logistics | 2025 |
| A.H.K.L. (Wells) Limited | | 1955 |
| A.H.P. Management Limited | Real estate | 2003 |
| A.H.S Building Group Ltd | Construction | 2021 |
| A.H.S Property Group Ltd | Real estate | 2021 |
| A.J. George Refrigeration and Air Conditioning Limited | Manufacturing | 1990 |
| A.J. Gollop Contract Flooring Limited | Construction | 1991 |
| A.J. House Limited | Real estate | 2002 |
| A.J.M. Windows (Manufacturing) Limited | | 1987 |
| A.J.S. Construction (S.W.) Limited | Construction | 2000 |
| A.J.S. Electrical (Bristol) Limited | Construction | 2003 |
| A.K. Butcher Transport Limited | Transport & logistics | 1983 |
| A.K. Commercials Limited | Wholesale & retail | 2003 |
| A.L. FRY Systems Engineering Ltd | Professional & scientific | 2022 |
| A.L.E. Building & Landscaping Ltd | Administrative & support | 2018 |
| A.L.S. Developments Limited | Real estate | 2003 |
| A.M. Property Services (Bristol) Ltd. | Real estate | 2019 |
| A.M.B.Investments Limited | Real estate | 1960 |
| A.M.F. Mobile Maintenance Ltd | Manufacturing | 2004 |
| A.N. Checker Limited | Construction | 2005 |
| A.O.G Builders Ltd | Construction | 2025 |
| A.O.M Tech Limited | Manufacturing | 2025 |
| A.P Scimeca Consulting Ltd | Information & communication | 2024 |
| A.P Vincent Partners Ltd | Professional & scientific | 2024 |
| A.P.C. Workwear Limited | Wholesale & retail | 2000 |
| A.P.D.Liner Ltd | Construction | 2017 |
| A.P.Day Limited | Information & communication | 2009 |
| A.P.E. Electrical Limited | Wholesale & retail | 1997 |
| A.Q.U.I.L.A. Limited | Real estate | 1983 |
| A.R.M Electrical Ltd | Energy | 2021 |
| A.Robert Transport Ltd | Transport & logistics | 2025 |
| A.S.C. Investing Limited | Financial services | 2025 |
| A.S.W.Entertainment Limited | Hospitality | 2024 |
| A.Sdistross Ltd | Wholesale & retail | 2025 |
| A.T.Locksmiths Limited | Wholesale & retail | 2021 |
| A.V.S Property Development Limited | Real estate | 2022 |
| A.W Properties SW Ltd | Real estate | 2024 |
| A.W. Computer Systems Limited | Administrative & support | 1997 |
| A.W.A Drains Ltd | Water & waste | 2024 |
| A1 1NTER1ORS Ltd. | Construction | 2014 |
| A1 Beer GAS Limited | Hospitality | 2014 |
| A1 Building & Roofing Solutions Ltd | Construction | 2019 |
| A1 Commercial Valeting Limited | Wholesale & retail | 2001 |
| A1 Garage Equipment Limited | Other services | 2012 |
| A1 Home Improvements South Limited | Construction | 2016 |
| A1 Leisure Ltd | Hospitality | 2024 |
| A1 Plumbing Heating Ltd | Construction | 2019 |
| A1 PPP Infrastructure Holdings Limited | Professional & scientific | 2002 |
| A1 Property Maintenance Limited | Construction | 2009 |