| 1 Portland Place Management Limited | Households | 2009 |
| 11 Portway Management Company Limited | Real estate | 2016 |
| 15 Chamberlain Street (Wells) Limited | Hospitality | 1982 |
| 153 Newbridge Hill Management Company Limited | Households | 2011 |
| 18 the Circus Ltd | Real estate | 2016 |
| 20 MPT (Management) Limited | Households | 2021 |
| 20 the Terrace Management Company Limited | Hospitality | 2012 |
| 20EIGHT Property Services Ltd | Real estate | 2023 |
| 21ST Century Homes Limited | Real estate | 2014 |
| 24 RC Court Yard Ltd | Real estate | 2022 |
| 271 Uxbridge Road Freehold Limited | Households | 2004 |
| 2PRO Ice Skate Ltd | Manufacturing | 2026 |
| 3 Solutions (2011) Limited | Construction | 2011 |
| 32 Brock Street Limited | Hospitality | 2006 |
| 333 Developments Limited | Extraterritorial | 2012 |
| 333 Homes Limited | Construction | 2012 |
| 39 OR (Management) Limited | Households | 2020 |
| 3F Advisory Partners Ltd | Professional & scientific | 2026 |
| 3T Innova Ltd | Wholesale & retail | 2020 |
| 46STM Limited | Real estate | 2026 |
| 46STMVSM LLP | | 2024 |
| 4U Pilates Limited | Arts & recreation | 2018 |
| 572 Bath Road Management Company Limited | Households | 2020 |
| 59 City Road Flat Management Limited | Households | 2003 |
| 5C Business Centre Management Company Limited | Real estate | 1992 |
| 6 ST Stephens Terrace Management Limited | Households | 1995 |
| 613 Consultancy Ltd | Professional & scientific | 2022 |
| 66 High Street Glastonbury Ltd | Real estate | 2016 |
| 67 Long Beach Road Ltd | Real estate | 2024 |
| 7 Day Cellar Limited | Wholesale & retail | 2017 |
| 9 Ellis Avenue (Bedminster Down) Management Company Limited | Administrative & support | 2007 |
| A & P Landscaping Solutions Ltd | Administrative & support | 2019 |
| A & R Racing Services Ltd | Wholesale & retail | 2017 |
| A D Smith Contracting Limited | Construction | 2008 |
| A H Green & SON Limited | Agriculture & fishing | 2010 |
| A J & E Associates Ltd | Other services | 2023 |
| A Place to Heal Limited | Professional & scientific | 2018 |
| A W Parry Lifts Holdings Ltd | Financial services | 2024 |
| A&B Engineering Services Ltd | Professional & scientific | 2022 |
| A.E. and P.I. Durston Limited | Wholesale & retail | 1990 |
| A.M.S. Cleaning Services (South West) Ltd | Water & waste | 2012 |
| Abbeydore Retreats Ltd | Arts & recreation | 2021 |
| Abbeygate Property Consultancy Limited | Professional & scientific | 2025 |
| ABC Best Management Ltd | Construction | 2016 |
| Abercorn Properties Bath Ltd | Real estate | 2017 |
| Abercorn Properties Kent LLP | | 2011 |
| Abercorn Properties Studham Limited | Real estate | 2021 |
| Ability Energy Limited | Administrative & support | 2016 |
| Ablefit Tyres & Exhausts Limited | Wholesale & retail | 2010 |
| Accademia SAN Felice | Administrative & support | 1997 |
| Access Medical Aesthetics Ltd | Health & social care | 2020 |
| Accessible Wells Community Interest Company | Health & social care | 2024 |
| Accountancy Training Partnership Limited | Information & communication | 2008 |
| ACT on Climate Ltd | Professional & scientific | 2016 |
| Adam Creagh Services Limited | Information & communication | 2018 |
| Adam Williams Design Limited | Manufacturing | 2009 |
| ADS Training Solutions Ltd | Administrative & support | 2025 |
| Advanced Electrical Solutions (South West) Limited | Construction | 2016 |
| AFFILI8 International Ltd | Professional & scientific | 2022 |
| Agalexo LLP | | 2013 |
| Agtrack Limited | Extraterritorial | 2011 |
| Agtsom Ltd | Professional & scientific | 2020 |
| Aikev Limited | Administrative & support | 2015 |
| AJ Luke Contracting Ltd | Agriculture & fishing | 2014 |
| Ajax R & D Limited | Professional & scientific | 2016 |
| AJO Business Consulting Limited | Professional & scientific | 2026 |
| Alan Butcher Limited | Construction | 2021 |
| Albino Builders Limited | Construction | 2011 |
| Alcombe Nature Reserve Limited | Other services | 2010 |
| ALE and Hearty Ltd | Hospitality | 2023 |
| Alex Crossman Environmental Consulting Ltd | Administrative & support | 2011 |
| Alexander Winston Properties Ltd | Real estate | 2017 |
| Alexandra Louise Designs Ltd | Manufacturing | 2019 |
| Allsop Carpets and Flooring Ltd | Wholesale & retail | 2025 |
| Alpha Associates Ltd | Construction | 2008 |
| Alpha Calibration Services Limited | Other services | 2010 |
| AM Entertainment Ltd | Arts & recreation | 2019 |
| Amazon Capital Ltd | Financial services | 2012 |
| Ambrosini Construction Group Ltd | Financial services | 1999 |
| AMC Engineering Services Ltd | Construction | 2021 |
| Amor International Ltd | Financial services | 2024 |
| AMP Electrical (SW) Limited | Construction | 2011 |
| Ampersand Legal Limited | Administrative & support | 2005 |
| Amulet 1959 Limited | Extraterritorial | 2015 |
| Analytic EYE Ltd | Information & communication | 2002 |
| Anam Cara Consultancy Ltd | Health & social care | 2021 |
| Andre Johns Ltd | Professional & scientific | 2023 |
| Andrea Brenner Catering Ltd | Wholesale & retail | 2013 |
| Andrew Ayers Talking Therapies Ltd. | Health & social care | 2015 |
| Andrew Bain Electrical Ltd | Manufacturing | 2017 |
| Andrew Delbridge Ltd | Professional & scientific | 2014 |
| Andrew Dumbreck Media Limited | Professional & scientific | 2011 |
| Andrew Townend Limited | Professional & scientific | 2015 |
| Andrews Enterprises Ltd | Professional & scientific | 2025 |
| Angela Mount Associates Limited | Hospitality | 2009 |
| Angela Poole Limited | Arts & recreation | 2018 |
| Angell Farming Limited | Agriculture & fishing | 2015 |
| Anglo Moroccan Gateway Limited | Wholesale & retail | 2025 |
| Ankh Decorative Alchemy Ltd | Professional & scientific | 2016 |
| Antique Stained Glass Ltd | Manufacturing | 2021 |