| ON Point Markings Ltd | Construction | 2025 |
| Online Ergonomics Limited | Wholesale & retail | 2005 |
| Opendatabay Ltd | Information & communication | 2024 |
| Orange Magic Ltd | Hospitality | 2020 |
| Orchard Farm (Norfolk) Ltd | Wholesale & retail | 2012 |
| Orchard Spa Retreat Ltd | Hospitality | 2024 |
| Orchid Nails VD Ltd | Other services | 2025 |
| Orchidgreen Limited | Administrative & support | 1998 |
| OTC Properties Ltd | Real estate | 2023 |
| OUR Freya’S Day Ltd | Arts & recreation | 2023 |
| OZ Intl Ltd | Hospitality | 2024 |
| OZ Takeaway Ltd | Hospitality | 2023 |
| P & R Wright Farms Limited | Agriculture & fishing | 2023 |
| P J Wayland's Limited | Transport & logistics | 2012 |
| P R Engineering & Design Services Limited | Professional & scientific | 2007 |
| P. J. Stent Limited | Administrative & support | 2008 |
| Page Trucking Ltd | Transport & logistics | 2020 |
| Pagoda Everyday Ltd | Wholesale & retail | 2025 |
| Para Classics Limited | Wholesale & retail | 2010 |
| Parker-Humphreys Ltd | Wholesale & retail | 2016 |
| Parklands Financial Advisers Ltd | Financial services | 2015 |
| Pashmina & Silk Ltd | Wholesale & retail | 2015 |
| Pashminas & Scarves Ltd | Wholesale & retail | 2015 |
| Patchwan Limited | Information & communication | 2018 |
| Paul Harvey Livestock Ltd | Agriculture & fishing | 2015 |
| Paul Knights Driver Hire Ltd | Other services | 2017 |
| Paul Reed Services Limited | Professional & scientific | 2024 |
| PCE Automation Limited | Manufacturing | 1999 |
| PCE Group Limited | Financial services | 2014 |
| PCE Properties Ltd | Real estate | 2020 |
| PDM Associates Ltd. | Manufacturing | 2011 |
| Pedalz Limited | Wholesale & retail | 2020 |
| Pentaction Limited | Administrative & support | 2006 |
| Perfect Productions Limited | Arts & recreation | 2020 |
| Petchem Engineering Services Limited | Real estate | 1985 |
| Petro C T S Limited | Professional & scientific | 2008 |
| Phil Burton (EA) Limited | Other services | 2012 |
| Pick Your Trade Limited | Construction | 2025 |
| Pinetree Bakery Ltd | Manufacturing | 2024 |
| PKA Associates Ltd | Manufacturing | 2010 |
| Placket and Browne Limited | Other services | 2017 |
| Planet Green Services Limited | Other services | 2019 |
| Plaws Industries Ltd | Hospitality | 2025 |
| Playters New Farm Limited | Agriculture & fishing | 2022 |
| Poetry People Community Interest Company | Education | 2017 |
| Point Five Home Improvements Ltd | Wholesale & retail | 2025 |
| Pointuk (EA) Ltd | Construction | 2021 |
| Portland Road Management Company Limited | Households | 1982 |
| Poseidon Exterior Cleaning Solutions Ltd | Administrative & support | 2026 |
| Premier Bowlfeeders Limited | Extraterritorial | 1985 |
| Premier Brickwork (East Anglia) Ltd | Construction | 2003 |
| Premier Feeders Limited | Extraterritorial | 2015 |
| Presidente Wines Limited | Wholesale & retail | 2018 |
| Pressure JET Markers Limited | Manufacturing | 1952 |
| Prestigious Training Solutions Limited | Education | 2014 |
| Priviness Ltd | Information & communication | 2017 |
| Pro Power Ltd | Construction | 2022 |
| Product DEN Ltd | Professional & scientific | 2017 |
| Project Design Services (East Anglia) Limited | Extraterritorial | 2012 |
| Pump Fitness Studios Ltd | Arts & recreation | 2026 |
| PWE Recruitment Group Ltd | Administrative & support | 1983 |
| PYE Estate Agents Ltd | Real estate | 2025 |
| Quandrix Ltd | Information & communication | 2024 |
| Quayside Conservatories Limited | Manufacturing | 1995 |
| Qube Design Group Ltd | Professional & scientific | 2018 |
| R & C Youngs Properties Ltd | Real estate | 2019 |
| R & R Farms (Wrentham) Limited | Administrative & support | 1993 |
| R and P Company Limited | Real estate | 1999 |
| R K Forder Game Farming Ltd | Agriculture & fishing | 2021 |
| R LEE Services (Beccles) Limited | Construction | 2009 |
| R M Cellar Services Limited | Other services | 2019 |
| R U Gaze & Co Limited | Real estate | 2013 |
| R&C Scaffolding Services Ltd | Construction | 2024 |
| R.T. Nelson and SON Limited | Agriculture & fishing | 1985 |
| Race and Road Masters Limited | Manufacturing | 2017 |
| Rachel Ducker Ltd | Professional & scientific | 2026 |
| Radical Aggregates Limited | Manufacturing | 2014 |
| Radical Biomass Limited | Energy | 2015 |
| Radical CHP (Beccles) Ltd | Water & waste | 2023 |
| Radical Energy Group Limited | Financial services | 2022 |
| Radical Group Limited | Extraterritorial | 2021 |
| Radical Risk Management Limited | Financial services | 2021 |
| Radical Training Limited | Education | 2022 |
| Radical Waste Group Limited | Water & waste | 2014 |
| Raven Farming Ltd | Professional & scientific | 2021 |
| Ravensmere Management Company Limited | Households | 2022 |
| RAW Consortium Limited | Administrative & support | 2014 |
| RCM24TRADING Ltd | Manufacturing | 2025 |
| Realistic Construction Limited | Construction | 2018 |
| Recyclatrack Limited | Water & waste | 2009 |
| Redz Hairstylists Ltd | Education | 2016 |
| Reeve Locum Ltd | Health & social care | 2021 |
| Regal Tanks (Sales) Limited | Wholesale & retail | 2009 |
| Regal Tanks Limited | Administrative & support | 2025 |
| Regallien Holdings Limited | Financial services | 2024 |
| Regallien Limited | Wholesale & retail | 1985 |
| Regallien Properties Limited | Real estate | 2016 |
| Reset Clinic Ltd | Other services | 2025 |
| Restitute CIC | Health & social care | 2019 |
| Revolution Landscapes Limited | Administrative & support | 2026 |