| P K Carpentry Solutions Limited | Construction | 2010 |
| Paintbox Consultancy Limited | Agriculture & fishing | 2008 |
| Parc Retreats UK Limited | Real estate | 2016 |
| Park Gate Farm Ltd | Health & social care | 2009 |
| Paul Baratte International Limited | Wholesale & retail | 1964 |
| Paul Cartwright Ltd | Education | 2021 |
| Paul Rasmussen Ltd | Wholesale & retail | 2015 |
| Paul Shelton and Company Ltd. | Real estate | 1987 |
| PCN Electronics Ltd | Information & communication | 2015 |
| Pearson Wealth Management Ltd | Professional & scientific | 2018 |
| Personal FX Limited | Transport & logistics | 2015 |
| Peter Ewart (Wealth Management) Limited | Financial services | 2012 |
| PF Ecology Limited | Other services | 2024 |
| Pharmaguapa Ltd | Professional & scientific | 1999 |
| Phenex Property Investment Ltd | Real estate | 2017 |
| Pilot Property Services Limited | Real estate | 2012 |
| Pinch Suffolk Ltd | Hospitality | 2021 |
| Platinum Personnel Solutions (UK) Limited | Administrative & support | 2006 |
| Plethora Limited | Wholesale & retail | 1995 |
| Plomesgate Brewery Ltd | Extraterritorial | 2011 |
| Plugsol Limited | Wholesale & retail | 2026 |
| PMR Services Limited | Construction | 2016 |
| Pob's Pyro Ltd. | Wholesale & retail | 2014 |
| Podgorney Consulting Limited | Professional & scientific | 2014 |
| Pomegranate Creative Therapies CIC | Health & social care | 2025 |
| Popovici Ltd | Construction | 2025 |
| Pottersfield Ltd | Construction | 2022 |
| Power Products Ltd | Professional & scientific | 1973 |
| Power Tool Products Limited | Wholesale & retail | 1973 |
| Premier Fish Feeds Ltd | Wholesale & retail | 2025 |
| Premier Seed Services Ltd. | Agriculture & fishing | 2002 |
| Prime Progress Limited | Professional & scientific | 2020 |
| Prism Neurodivergent LLP | | 2026 |
| Profuse Ltd | Construction | 2013 |
| Proj-Plan Limited | Professional & scientific | 2015 |
| Prometheus Orchestra | Arts & recreation | 2011 |
| Protein Feeds Limited | Manufacturing | 1980 |
| PTP Holdings Limited | Financial services | 2021 |
| PTR Construction Ltd | Construction | 2015 |
| Pulham & Co Limited | Professional & scientific | 2023 |
| Purely Pesto Limited | Manufacturing | 2006 |
| QTR Management Limited | Households | 2021 |
| R & R Carpentry (Aldeburgh) Limited | Manufacturing | 2011 |
| Rade New Media Limited | Information & communication | 1998 |
| Rbkm Management Services Ltd | Financial services | 2011 |
| Recipes From a Pantry Ltd | Hospitality | 2017 |
| Recover Health Ltd | Health & social care | 2024 |
| Red House Farm Retreats Ltd | Hospitality | 2024 |
| Red Thread Communications Limited | Professional & scientific | 2012 |
| Research Advice Service Limited | Extraterritorial | 2017 |
| Resound Sound Ltd | Information & communication | 2014 |
| Rest Azured UK Ltd | Information & communication | 2023 |
| Retention Release Services Ltd | Administrative & support | 2026 |
| Reubens Landscape Designs Limited | Administrative & support | 2006 |
| RF Engineering & Maintenance Services Ltd | Professional & scientific | 2020 |
| Rhythm With Roots C.I.C. | Education | 2025 |
| Richard Stace Ltd | Professional & scientific | 2021 |
| RKH Suffolk Limited | Real estate | 2020 |
| RM Glover Ltd | Agriculture & fishing | 2026 |
| RML Haulage Ltd | Transport & logistics | 2024 |
| Roche Property Limited | Real estate | 2015 |
| Rockgrove Construction Ltd | Construction | 2025 |
| Rollerdeck Ltd | Administrative & support | 2026 |
| Roofing London Ltd | Hospitality | 2025 |
| Rooted Education Ltd | Education | 2026 |
| Rosemary Lane Ltd | Construction | 2020 |
| Rosie Prime Limited | Information & communication | 2011 |
| Rotary Estates Limited | Real estate | 2019 |
| Royle T Property Maintenance Suffolk Ltd | Real estate | 2022 |
| RSC Property Limited | Real estate | 2017 |
| Rufai Ltd | Wholesale & retail | 2026 |
| RUM Bunch Ltd | Hospitality | 2020 |
| S Long and SON Limited | Agriculture & fishing | 2016 |
| Sabona Rheumatic Relief Company Limited | Wholesale & retail | 1960 |
| Sackville Residents Group Limited | Households | 2019 |
| Salter Group (East Anglia) Limited | Manufacturing | 2019 |
| Salus Hire Ltd | Administrative & support | 2021 |
| Samkin of Saxmundham Limited | Wholesale & retail | 1981 |
| SAX Compute Ltd | Information & communication | 2023 |
| SAX Modern Barbers Ltd | Other services | 2024 |
| SAX USA Nails Limited | Other services | 2025 |
| Saxbridge Care Ltd | Health & social care | 2021 |
| Saxmundham Angling & Engraving Centre Ltd | Wholesale & retail | 2014 |
| Saxmundham Art Station | Arts & recreation | 2016 |
| Saxmundham Auto Center Ltd | Wholesale & retail | 2025 |
| Saxmundham Carpets & Flooring Ltd | Wholesale & retail | 2022 |
| Saxmundham Couriers Ltd | Transport & logistics | 2010 |
| Saxmundham Hand Car Wash Ltd | Other services | 2020 |
| Saxmundham Music & Arts CIC | Arts & recreation | 2017 |
| Saxmundhampizza Limited | Hospitality | 2025 |
| Saxon Boats Ltd | Manufacturing | 2022 |
| Saxon Fencing & Landscaping Limited | Administrative & support | 2026 |
| Scaled UP Fish Limited | Wholesale & retail | 2019 |
| Score Production Music Limited | Information & communication | 2009 |
| SDM Building & Training Services Ltd | Construction | 2015 |
| Seaman Avenue Flats Management Company Limited | Real estate | 1993 |
| Seasearch CIC | Professional & scientific | 2025 |
| Seax Pictures Limited | Manufacturing | 2025 |
| Sebastian Behavioural Consultants Ltd | Health & social care | 2026 |
| Secret Meadows Ltd | Hospitality | 2008 |