| Next Wave Graphics Ltd | Professional & scientific | 2025 |
| Nexus Training Ltd. | Education | 1997 |
| NFP Resourcing Limited | Professional & scientific | 2001 |
| Nicholson Engineering Limited | Manufacturing | 1995 |
| NO. 1 Fish & Chips Limited | Hospitality | 2026 |
| Nosh @ Foundry LEA Ltd | Hospitality | 2025 |
| Number Thirty One Investments Limited | Construction | 1948 |
| Nutec GB Limited | Information & communication | 1992 |
| Nutri PUP Ltd | Wholesale & retail | 2024 |
| Oakmere Place Management Limited | Administrative & support | 1999 |
| Objection CIC | Information & communication | 2025 |
| Ocean AID Medics Ltd | Mining & quarrying | 2024 |
| Ocopogo Limited | Information & communication | 2020 |
| Oleo Bodycare Limited | Manufacturing | 2009 |
| Olive Tree (Bridport) Limited | Hospitality | 2007 |
| Oliver's Mobile Kitchen LLP | | 2023 |
| OM Physical Training Solutions Ltd | Other services | 2025 |
| Open Fifth Limited | Information & communication | 2007 |
| Open Wide Limited | Manufacturing | 2022 |
| Operation Venus Ltd | Information & communication | 2013 |
| Options Education Limited | Information & communication | 2010 |
| Options Education Research Limited | Information & communication | 2018 |
| Orchard Echoes Limited | Arts & recreation | 2025 |
| Origin Plumbing & Electrical Ltd | Construction | 2026 |
| Orkney Productions Limited | Information & communication | 2014 |
| Osiris Consulting Limited | Information & communication | 1996 |
| Outbuildings Dorset Ltd | Hospitality | 2022 |
| Outdoorfood Limited | Manufacturing | 2016 |
| Owes Ltd | Wholesale & retail | 2025 |
| Oxford Place Management Company Limited | Real estate | 1983 |
| P B Plant Hire & Groundworks Limited | Administrative & support | 2011 |
| P&L Accounts and Tax Limited | Professional & scientific | 2014 |
| Palmers Meadow (Bridport) Management Company Ltd | Households | 2019 |
| Park & Rowe Properties Limited | Real estate | 2025 |
| Parkway MEP Limited | Construction | 2024 |
| Parodime Ltd | Wholesale & retail | 2012 |
| Pathak Yoga Limited | Other services | 2015 |
| Patricia DE 'La'Hunty Properties Ltd | Real estate | 2015 |
| Paul's Electroacoustic Developments Ltd | Manufacturing | 2018 |
| Paynes International Transport Ltd | Transport & logistics | 2023 |
| Peakxv Events Ltd | Professional & scientific | 2022 |
| Perennial Roofing Contractors Limited | Construction | 2016 |
| Peter Grinter Limited | Administrative & support | 2002 |
| Pets Properties Limited | Real estate | 2014 |
| PFI Building Services Limited | Construction | 2016 |
| Phillips of Bristol Limited | Wholesale & retail | 2021 |
| Pickles & Cream Ltd | Hospitality | 2026 |
| Pilsdon Farm Limited | Agriculture & fishing | 2008 |
| Pilsdon PEN Limited | Manufacturing | 2007 |
| Pineapple Estate (Dorset) Ltd | Real estate | 2018 |
| Pineapple Farm Holidays Ltd | Hospitality | 2018 |
| Pitchdell Properties Ltd | Real estate | 2021 |
| Platform Restaurant Ltd | Hospitality | 2024 |
| Pljn Holdings Limited | Financial services | 2025 |
| Polelatis Ltd | Information & communication | 2008 |
| Porter Haworth Limited | Professional & scientific | 2005 |
| Poundpiece Limited | Extraterritorial | 2003 |
| Power UK Limited | Professional & scientific | 1988 |
| PPL Holdco Limited | Real estate | 2018 |
| Pre-Construction Ltd | Professional & scientific | 2024 |
| Precision Football Arena CIC | Arts & recreation | 2024 |
| Premier Plumbing and Heating South West Ltd | Construction | 2024 |
| Prestige Profiles Limited | Manufacturing | 1999 |
| Priory Lane Management Company Limited | Households | 2007 |
| Pro CUT Barbers 1 Ltd | Other services | 2026 |
| Pro-Fit NET Installations Ltd. | Arts & recreation | 2012 |
| Progtm Ltd | Professional & scientific | 2023 |
| Property Box Partners Ltd | Real estate | 2025 |
| Property Box Solutions Ltd | Real estate | 2019 |
| Psychotherapy Ealing Ltd | Health & social care | 2023 |
| Puente Talent Ltd | Administrative & support | 2026 |
| Purchase & Hobby Catering Ltd | Hospitality | 2019 |
| PWB Motors Ltd | Wholesale & retail | 2018 |
| Pwnathan Limited | Construction | 2021 |
| Pymore Village Management Company Limited | Households | 2000 |
| Quickdraw Designs Limited | Professional & scientific | 2008 |
| Quisquam Solutions Limited | Education | 2010 |
| R a Cabs Ltd | Transport & logistics | 2024 |
| R K L Tools & Hardware Limited | Wholesale & retail | 2002 |
| R N Stephenson Electrical Contractors Ltd | Construction | 2012 |
| R S J Developments Limited | Construction | 2002 |
| R Townsend Building Contractor Ltd | Construction | 2024 |
| R. & D. Tuck Thatching Ltd. | Construction | 2002 |
| R. D. Challis & Sons Ltd | Construction | 2010 |
| R.M.Gillingham & Son,Limited | Real estate | 1938 |
| Racing and Classic Engineering Limited | Wholesale & retail | 2013 |
| Rannerdale Limited | Wholesale & retail | 1999 |
| RAX Films Ltd | Information & communication | 2023 |
| Red Raygun Ltd | Wholesale & retail | 2012 |
| Red Rhino Interiors Limited | Manufacturing | 2026 |
| Refurb Rescue Ltd | Construction | 2025 |
| Rehair UK Ltd | Other services | 2024 |
| Reid Construction Services Ltd | Professional & scientific | 2012 |
| Relict Group Limited | Information & communication | 2022 |
| Rewild Retreat Ltd | Agriculture & fishing | 2025 |
| Rewired Electrical Ltd | Construction | 2023 |
| Rich's From the Sea Ltd | Agriculture & fishing | 2015 |
| Rich's Maritime Services Ltd | Transport & logistics | 2025 |
| Richard Fowler Ltd | Real estate | 2002 |
| Rimbault Sonopodiatry Ltd | Health & social care | 2024 |