| 04021465 Limited | Manufacturing | 2000 |
| 1-2-1 Live in Care Ltd | Administrative & support | 2021 |
| 12 Clevedon Road Freehold Company Limited | Households | 2019 |
| 12 ST Mary Street Management Company Limited | Households | 2008 |
| 121TURNAROUND Ltd | Health & social care | 2013 |
| 12TH Design Co Ltd | Professional & scientific | 2024 |
| 13TH Design Co Ltd | Professional & scientific | 2024 |
| 14/15 Wadham Management Company Limited | Households | 2020 |
| 1610 Limited | Arts & recreation | 2008 |
| 18 Contract Distilling Limited | Manufacturing | 2024 |
| 18 Design & Manufacture Ltd | Manufacturing | 2024 |
| 238 Property Ltd | Real estate | 2024 |
| 27 Upper Church Road Management Company Limited | Households | 1989 |
| 2A Blake Street Management Company Limited | Households | 2007 |
| 2LOD GRC Solutions Ltd. | Information & communication | 2024 |
| 2X Display Co Ltd | Professional & scientific | 2024 |
| 3 Generations Limited | Hospitality | 2014 |
| 3 Hammers Golf Complex Ltd | Arts & recreation | 2024 |
| 3 Lives Movie Limited | Information & communication | 2016 |
| 32 York Road Limited | Real estate | 2017 |
| 41ST Design Co Ltd | Professional & scientific | 2024 |
| 42ND Design Co Ltd | Professional & scientific | 2023 |
| 4B Investment Ltd | Real estate | 2023 |
| 4UKHT Ltd | Real estate | 2022 |
| 51ST Design Co Ltd | Professional & scientific | 2023 |
| 52ND Design Co Ltd | Professional & scientific | 2024 |
| 53RD Design Co Ltd | Professional & scientific | 2024 |
| 6 Princes Buildings (Bath) Management Company Limited | Professional & scientific | 1989 |
| 6 Silver Street Ltd | Real estate | 2026 |
| 72ND Design Co Ltd | Professional & scientific | 2024 |
| 8 Chamberlain Street Management Company Limited | Households | 2020 |
| 8TH Design Co Ltd | Professional & scientific | 2024 |
| 92ND Design Co Ltd | Professional & scientific | 2020 |
| @ Project Twenty Seven Limited | Real estate | 2025 |
| @Eglance Limited | Information & communication | 2002 |
| @Greenstart.Dbr Ltd | Construction | 2020 |
| A & J Plant Limited | Wholesale & retail | 2022 |
| A & J Property Cleaning Limited | Other services | 2013 |
| A & Y Stone Plant Limited | Extraterritorial | 2003 |
| A and a Estates Properties Limited | Real estate | 2020 |
| A C Asbestos Consultants Limited | Professional & scientific | 2018 |
| A Caravela Ltd | Hospitality | 2018 |
| A Dogs Day OUT Ltd | Administrative & support | 2019 |
| A J Tensile Limited | Professional & scientific | 2019 |
| A M Accounting Limited | Professional & scientific | 2014 |
| A Mind 4 Adventure Limited | Administrative & support | 2010 |
| A R Evans Plumbing & Heating Ltd | Construction | 2010 |
| A T Aviation (Engineering) Limited | Manufacturing | 2018 |
| A T Aviation Sales Limited | Wholesale & retail | 2010 |
| A Twist of Somerset Ltd | Construction | 2026 |
| A W Alarms Ltd | Administrative & support | 2016 |
| A&C Exterior Cleaning Services Ltd | Administrative & support | 2026 |
| A&M Renovation & Construction Ltd | Construction | 2026 |
| A&R UK Food Limited | Hospitality | 2025 |
| A.J.R Coleman Electrical Services Ltd | Construction | 2021 |
| A.L.S. Service and Repairs Limited | Wholesale & retail | 2020 |
| A.N.J. Builders Limited | Construction | 2021 |
| A.R.R.O.W. Self-Voice Limited | Education | 2013 |
| A.V.P. Limited | Professional & scientific | 1989 |
| A1 MOT Centre (Bridgwater) Limited | Wholesale & retail | 2011 |
| A2 Motion Pictures Limited | Information & communication | 2026 |
| A2Z Electrical Innovations Ltd | Construction | 2025 |
| A38 IT Ltd | Wholesale & retail | 2022 |
| A38 Thurloxton Ltd | Hospitality | 2025 |
| Aaar UK Food Limited | Hospitality | 2023 |
| Aaff Block Management Limited | Real estate | 2018 |
| Aarshika Ltd | Wholesale & retail | 2026 |
| AB Wholesale and Vending Limited | Hospitality | 2014 |
| Abletec Ltd | Information & communication | 2019 |
| ABS Taunton Ltd | Hospitality | 2023 |
| Absolute South Ltd | Extraterritorial | 2011 |
| ACB Solutions (SW) Ltd | Professional & scientific | 2019 |
| Accelerant Solutions Limited | Information & communication | 2007 |
| Accelerate in Tuition Ltd | Education | 2023 |
| Accolade Research and Development Limited | Construction | 1999 |
| Accord Medical Limited | Health & social care | 2011 |
| Accutest International Ltd | Professional & scientific | 2018 |
| Ace Plumbing & Heating (B/W) Limited | Construction | 2019 |
| Ace Services (South West) Limited | Households | 2003 |
| ACG & LC Limited | Arts & recreation | 2021 |
| Ackland Tyres Ltd | Wholesale & retail | 2016 |
| Acorn & Burnham Scaffolding Limited | Construction | 2026 |
| Acorn Scaffolding Limited | Construction | 2014 |
| Active Group (South West) Ltd | Wholesale & retail | 2015 |
| ADC Scaffolding Limited | Construction | 2023 |
| ADH Communications Ltd | Professional & scientific | 2026 |
| Admir Projects UK Limited | Construction | 2023 |
| Admiral's Wharf Management Company Limited | Households | 1988 |
| Adrian Dunbar & Co Ltd | Information & communication | 2016 |
| ADV Grid Ltd | Professional & scientific | 2020 |
| Advertising Services Limited | Professional & scientific | 2002 |
| ADZ Services Ltd | Administrative & support | 2024 |
| AE Empire Services(Uk) Limited | Wholesale & retail | 2022 |
| Aerial Attire Ltd | Wholesale & retail | 2019 |
| Aerodyllo Services Limited | Other services | 2011 |
| Afive Business Services Ltd | Administrative & support | 2019 |
| African Artisans Limited | Wholesale & retail | 2006 |
| After Frankenstein Limited | Information & communication | 2014 |
| AG AGU Construction Limited | Construction | 2017 |
| Agilepro Solutions Ltd | Information & communication | 2024 |