| Panos Damaskinidis Limited | Information & communication | 2014 |
| Paper House Project Ltd | Professional & scientific | 2013 |
| Parchester Limited | Professional & scientific | 2010 |
| Parker Jones Corp. Limited | Professional & scientific | 2024 |
| Parsonage Mead Limited | Real estate | 2003 |
| Parsons Properties (Sherborne) Ltd | Construction | 2022 |
| Parsons Yard Management Company Limited | Households | 2023 |
| Paternoster Property Limited | Real estate | 2025 |
| Patrick's Plumbing and Heating Ltd | Construction | 2021 |
| Patson Hill Farm Limited | Agriculture & fishing | 2022 |
| Pattern Atelier Ltd | Professional & scientific | 2026 |
| Paulkvfx Limited | Information & communication | 2025 |
| Peach River Limited | Professional & scientific | 1993 |
| Pearce Seeds (Holdings) Limited | Wholesale & retail | 1977 |
| Pearce Seeds LLP | | 2012 |
| Pebble Ventures Ltd | Professional & scientific | 2016 |
| Peckham Radio Ltd | Information & communication | 2025 |
| Pemco Pitstop Limited | Wholesale & retail | 2011 |
| Pemco Telematics Limited | Wholesale & retail | 2020 |
| Pentatonix Limited | Information & communication | 2007 |
| Pentimento Pictures Ltd | Information & communication | 2026 |
| PER4MANCE Business Design Limited | Professional & scientific | 2011 |
| Perfect Location Ltd | Hospitality | 2025 |
| Perrett Fencing Limited | Manufacturing | 2013 |
| Perrett Products Ltd | Professional & scientific | 2021 |
| Perrycrest (2017) Ltd | Financial services | 2017 |
| Perrycrest Limited | Real estate | 1984 |
| Peter Kelly Ltd | Wholesale & retail | 2004 |
| Petite Mort Pictures Ltd | Information & communication | 2026 |
| Phoenix Hair Boutique Ltd | Other services | 2023 |
| Phoenix Wharf Design Limited | Professional & scientific | 2014 |
| Pinkbaboon Limited | Information & communication | 2010 |
| Pittards Group Ltd | Manufacturing | 2023 |
| PLH Properties Ltd | Real estate | 2016 |
| Plum & Turner Ltd | Manufacturing | 2021 |
| Plum Pubs Limited | Hospitality | 2012 |
| Podimore Recycling Limited | Water & waste | 2003 |
| Polarlys Limited | Other services | 2020 |
| Port William Limited | Professional & scientific | 2020 |
| Portfolio Fine Art Ltd | Wholesale & retail | 2018 |
| PR Carpentry & Kitchens Ltd | Manufacturing | 2019 |
| PR Properties Southwest Ltd | Real estate | 2023 |
| Prestige Carpentry & Construction Co. Ltd | Construction | 2018 |
| Prestige Development Co. Ltd | Construction | 2025 |
| Price & Gore Architects Limited | Professional & scientific | 2015 |
| Prigel Ltd | Wholesale & retail | 2026 |
| Primrose Three Limited | Financial services | 2022 |
| Printers Court (Sherborne) Management Company Limited | Households | 1990 |
| Printers Court Management Company Limited | Households | 2001 |
| Process Envision Limited | Information & communication | 2021 |
| Prodigy Haven Ltd | Real estate | 2023 |
| Project 59 LVA LLP | | 2019 |
| Project 76 LVA LLP | | 2022 |
| Project 85 LVA LLP | | 2023 |
| Project 86 LVA LLP | | 2024 |
| Project 87 LVA LLP | | 2024 |
| Project 89 LVA LLP | | 2025 |
| Project 92 LVA LLP | | 2026 |
| Project 93 LVA LLP | | 2026 |
| Project 95 LVA LLP | | 2026 |
| Project Entity Ltd | Real estate | 2016 |
| Project Fabrications (Newbury) Limited | Construction | 1989 |
| PROJECT-90 LVA LLP | | 2025 |
| Proline Pools Ltd | Construction | 2023 |
| Prop Architects Ltd | Professional & scientific | 2022 |
| Propr Public Relations Ltd | Professional & scientific | 2019 |
| Prsm Marketing Ltd | Professional & scientific | 2012 |
| Pupperbalm Limited | Wholesale & retail | 2026 |
| Puraflow Plumbing Services Ltd | Construction | 2024 |
| Pure Hair Sherborne Limited | Other services | 2017 |
| Pure Wellbeing 2 Limited | Other services | 2017 |
| Pure Wellbeing Limited | Other services | 2014 |
| Purveyors of Limited | Wholesale & retail | 2020 |
| PW Antiques Limited | Wholesale & retail | 2002 |
| PW Motors Ltd | Wholesale & retail | 2013 |
| Pyne Consulting Limited | Information & communication | 1995 |
| Qualitas Consulting Limited | Information & communication | 2008 |
| Quantifind Marketing Limited | Professional & scientific | 2024 |
| Quaperlake Management Limited | Households | 1989 |
| Queenswood Natural Foods Limited | Wholesale & retail | 1988 |
| R Dyke Decorating Ltd | Construction | 2017 |
| R Howard Utilities Ltd | Water & waste | 2020 |
| R Jane Simmons Design Ltd | Professional & scientific | 2017 |
| R O a Financial Ltd | Administrative & support | 2021 |
| R W Prince Limited | Transport & logistics | 2003 |
| Radio Sherborne Community Interest Company | Information & communication | 2010 |
| Ragged Bears Limited | Wholesale & retail | 1986 |
| Rainbeau Fyah Ltd | Manufacturing | 2026 |
| Raison Walters Ltd | Information & communication | 2026 |
| Raleigh Court Residents (Sherborne) Limited | Households | 1995 |
| Rapier Consulting Limited | Professional & scientific | 2019 |
| Ravencliff Holdings Ltd | Financial services | 2025 |
| Ravencliff Properties Ltd | Real estate | 2026 |
| RB Health & Quality Care Limited | Health & social care | 2022 |
| RDP Services (Dorset) Limited | Manufacturing | 2007 |
| Read Studio Ltd | Professional & scientific | 2023 |
| Reads Coffee Roasters Limited | Manufacturing | 2019 |
| Rebidding Solutions Ltd | Professional & scientific | 2012 |
| Reeves James Limited | Professional & scientific | 2013 |
| Remous Group Limited | Financial services | 2019 |