| Ocean House 128 Limited | Hospitality | 2022 |
| Ocean Street Limited | Hospitality | 2026 |
| Ocean to Earth Recruitment Ltd | Administrative & support | 2024 |
| OCJ Ltd | Professional & scientific | 2020 |
| Onclinicall Limited | Administrative & support | 2018 |
| Onpoint Barbers (Street) Limited | Other services | 2008 |
| ONS Electrical Engineering Limited | Construction | 2016 |
| OO Catering Ltd | Hospitality | 2025 |
| Optima Architectural Solutions Ltd | Professional & scientific | 2018 |
| Overleigh Consulting Limited | Information & communication | 2006 |
| Owen Barry Limited | Manufacturing | 1991 |
| Ozoneering Limited | Administrative & support | 2007 |
| P J Cook Construction Ltd | Construction | 2005 |
| Paperround HND Service Limited | Information & communication | 2005 |
| Patio and Driveway Company Limited | Construction | 2008 |
| Payne Electrics Ltd | Construction | 2020 |
| Peace From Practice Ltd | Wholesale & retail | 2023 |
| Pesspa Limited | Arts & recreation | 2023 |
| Phixed Group Ltd | Information & communication | 2025 |
| Pipwrk Ltd | Wholesale & retail | 2025 |
| PK UK Group Limited | Financial services | 2020 |
| PK UK Leisure Limited | Transport & logistics | 2020 |
| PK UK Property Limited | Professional & scientific | 2020 |
| Polden Farms Limited | Agriculture & fishing | 1939 |
| Poole Resources Limited | Professional & scientific | 2007 |
| Posie Limited | Wholesale & retail | 2018 |
| Precision Optics Ltd. | Wholesale & retail | 2016 |
| Prime Media Ltd | Administrative & support | 2023 |
| Pristine Cleaning and Painting Services Ltd | Construction | 2016 |
| Pro Tennis Coaching Ltd | Education | 2023 |
| Pure Hairdressing Ltd | Other services | 2024 |
| Pure Podcasting Ltd | Information & communication | 2017 |
| Pure Rock Street Ltd | Hospitality | 2025 |
| Q Lights Ltd. | Construction | 2014 |
| Qantification Ltd | Professional & scientific | 2019 |
| QUALITAS365 Ltd | Information & communication | 2026 |
| Quicksand Sports Limited | Wholesale & retail | 2024 |
| Quietly Inspire Ltd | Manufacturing | 2025 |
| Quinn Space Ltd | Construction | 2025 |
| R a Stacey Plant Hire Ltd | Construction | 2015 |
| R and D (Leather) Ltd | Wholesale & retail | 2008 |
| R S Project Enterprises Ltd | Construction | 2012 |
| Rabanwell Consultancy Ltd | Professional & scientific | 2024 |
| Ralf Messemer Ltd | Professional & scientific | 2012 |
| Randolph Mews Limited | Households | 1985 |
| Rapro Emulations Limited | Information & communication | 1999 |
| RAW Kids Gymnastics Street Ltd | Arts & recreation | 2025 |
| RDA Events Limited | Professional & scientific | 2015 |
| RDA Services Limited | Professional & scientific | 2018 |
| Realm Limited | Real estate | 2001 |
| Recall Asset Recovery Limited | Administrative & support | 2017 |
| Regen Plant Limited | Administrative & support | 2022 |
| Reilly Resin Surfaces Limited | Construction | 2023 |
| Rendezvous Concierge Services Limited | Transport & logistics | 2017 |
| Reward Deals UK LLP | | 2015 |
| RFN Holdings Limited | Financial services | 2019 |
| RFP Tree and Landscape Services Ltd | Agriculture & fishing | 2015 |
| Rita Hraiz Events Ltd | Other services | 2016 |
| Rita Hraiz Retreats Ltd | Wholesale & retail | 2016 |
| ROB Hockey General Builder Limited | Construction | 2014 |
| Rodelle Ventures Ltd | Hospitality | 2024 |
| Royal Standard Somerset Limited | Hospitality | 2026 |
| Rumena Property Management Ltd | Real estate | 2025 |
| Rumsey's Auctioneers Limited | Wholesale & retail | 2016 |
| Rumsey's Fine Jewellery Limited | Wholesale & retail | 2014 |
| Ruption Limited | Wholesale & retail | 2017 |
| Russell & Hambleton Ltd | Real estate | 2020 |
| Ryan Mundy Limited | Professional & scientific | 2023 |
| S & L Profix Limited | Construction | 2015 |
| S.L.H. Services Ltd | Administrative & support | 2018 |
| S4 Scaffolding Limited | Construction | 2009 |
| SAF Street Limited | Hospitality | 2026 |
| Sage Equity Finance Ltd | Financial services | 2011 |
| Saint Arian Healthcare Limited | Health & social care | 2023 |
| Saintplan Limited | Wholesale & retail | 1986 |
| Sapphire Earth Ltd | Education | 2019 |
| SC & PSW Pring Ltd | Professional & scientific | 2012 |
| Scramble Competitions Limited | Wholesale & retail | 2025 |
| Seaward Material Solutions Ltd | Professional & scientific | 2013 |
| Sebastian Richards Ltd | Professional & scientific | 2021 |
| Seed People Ltd | Information & communication | 2019 |
| Serling Lake Ltd | Information & communication | 2019 |
| Shopland Services Ltd | Wholesale & retail | 2018 |
| Silva Tree Services (SW) Ltd | Agriculture & fishing | 2024 |
| Silverplate Limited | Hospitality | 2018 |
| Silverstone Dream Cars Ltd | Wholesale & retail | 2018 |
| Sinclair Properties (Somerset) Ltd | Financial services | 2025 |
| Skynique Ltd. | Information & communication | 2015 |
| Sleigh Builders Limited | Construction | 2002 |
| SOCCER1Q.COM Limited | Education | 2019 |
| Softshock Limited | Manufacturing | 2000 |
| Somadata Consultancy Limited | Information & communication | 2001 |
| Somer Sets Promotions Ltd | Wholesale & retail | 2024 |
| Somerset 1966 Limited | Extraterritorial | 2014 |
| Somerset Car Repairs Ltd | Wholesale & retail | 2021 |
| Somerset Estate Agents Ltd | Real estate | 2024 |
| Somerset Garden Services and Maintenance Limited | Administrative & support | 2012 |
| Somerset Loft Conversions Ltd | Construction | 2021 |
| Somerset Property Group Ltd | Real estate | 2021 |
| Somerset Property NO. 1 Ltd | Real estate | 2024 |