| Norfolk Salvage Ltd | Extraterritorial | 2024 |
| Northtrack Limited | Real estate | 1999 |
| O.J Fencing Ltd | Construction | 2016 |
| Oak & Lime Ltd | Manufacturing | 2006 |
| Offshore Hydrographic Processing Ltd | Mining & quarrying | 2004 |
| Old Dairy Denton Limited | Hospitality | 2016 |
| Olivia Whaley PR Ltd | Professional & scientific | 2024 |
| ON the Hill Ixworth Ltd | Hospitality | 2023 |
| ON the Lees Ltd | Hospitality | 2020 |
| Onward Enterprises (East) Community Interest Company | Health & social care | 2008 |
| Opcoachuk Limited | Professional & scientific | 2023 |
| Oulton Electrical Limited | Construction | 2015 |
| OUT of Reach Scaffolding Limited | Construction | 2023 |
| P G L Joinery Limited | Construction | 2010 |
| P R Reeve Ltd | Construction | 2007 |
| P.F.K. Ling 73 Limited | Wholesale & retail | 2026 |
| Page Property Developments Ltd | Real estate | 2025 |
| Pair of Hands Ltd | Administrative & support | 2022 |
| Palmer-Bew Limited | Hospitality | 2003 |
| Paul Hamilton Consultants Limited | Agriculture & fishing | 2007 |
| Paul Shelley Plumbing & Heating Ltd | Construction | 2012 |
| Pedl Developments Ltd | Construction | 2020 |
| Pegasus Rifle Company Limited | Extraterritorial | 2012 |
| Peter Johnson Agricultural Engineers Limited | Manufacturing | 2008 |
| Petm IT Ltd | Information & communication | 2024 |
| Pica Clothing Ltd | Wholesale & retail | 2024 |
| Pink H2 (Europe) Ltd | Manufacturing | 2022 |
| Pinks and Greens Ltd | Wholesale & retail | 2011 |
| Pochin Electrical Services Ltd | Construction | 2024 |
| Pods at Holly Tree Farm Limited | Hospitality | 2024 |
| Pogue Mahon's Limited | Hospitality | 2007 |
| Popmix Limited | Real estate | 2014 |
| Popup Puzzle Games Ltd | Arts & recreation | 2025 |
| Portland Management (UK) Limited | Real estate | 2001 |
| POWER2CYCLE Limited | Extraterritorial | 2025 |
| Pragmatic Innovation Labs Ltd. | Information & communication | 2024 |
| Prem E Air Ltd | Construction | 2025 |
| Pride Press Limited | Manufacturing | 2006 |
| Property Prestige Limited | Real estate | 2020 |
| Pulham Pigs Ltd | Wholesale & retail | 2025 |
| Pure Amenity Limited | Extraterritorial | 2009 |
| Pure Lettings Limited | Real estate | 2005 |
| Pure Residential Ltd | Real estate | 2009 |
| Purepickuk Ltd | Wholesale & retail | 2025 |
| R & D Properties (UK) Limited | Real estate | 2003 |
| R & T Stammers Ltd | Other services | 2013 |
| R L a Design & Development Ltd | Wholesale & retail | 2016 |
| R.B Earthmoving Limited | Extraterritorial | 2022 |
| R.E.C. Livery (2026) Limited | Arts & recreation | 2026 |
| Rebel Pubs Ltd | Hospitality | 2026 |
| Redmarque Limited | Manufacturing | 2004 |
| Relational Path Counselling Ltd | Health & social care | 2026 |
| Reproute Ltd | Wholesale & retail | 2026 |
| Retain Group Holdings Limited | Financial services | 2023 |
| Revuebar Films Ltd | Information & communication | 2022 |
| Reydon House Ltd | Professional & scientific | 2026 |
| RFC Limited | Real estate | 1998 |
| RHF Group Ltd | Professional & scientific | 2020 |
| Ridemoto Limited | Wholesale & retail | 2014 |
| Riders Ramps Events Limited | Arts & recreation | 2021 |
| RIO Media Limited | Information & communication | 1988 |
| Ripple Solutions Ltd | Professional & scientific | 2024 |
| Riseborough Farms Limited | Agriculture & fishing | 1973 |
| RIX Engineering (Harleston) Limited | Manufacturing | 2002 |
| Robin Foster-Clarke Limited | Administrative & support | 2004 |
| Ruff N Tuff Clothing Ltd | Wholesale & retail | 2018 |
| Rutnam Properties Ltd | Real estate | 2020 |
| S & M Building Solutions Ltd | Construction | 2014 |
| S Pollard Ltd | Construction | 2020 |
| SAE Events Ltd | Construction | 2024 |
| Sancroft Square Management Company Limited | Households | 2011 |
| Sarah Lucas Limited | Arts & recreation | 2001 |
| Sash Radiant Shine Ltd | Administrative & support | 2025 |
| SB Electrical (East Anglia) Limited | Construction | 2023 |
| Secret Thai Garden Ltd | Hospitality | 2022 |
| Seelyco Limited | Wholesale & retail | 2025 |
| Select Gifts Limited | Wholesale & retail | 2024 |
| Shona Retreats Ltd | Real estate | 2021 |
| Shriya Group of Companies Ltd | Wholesale & retail | 2026 |
| Shriya Retail Limited | Wholesale & retail | 2026 |
| Shriya Stores Ltd | Wholesale & retail | 2024 |
| Simeco Ltd | Professional & scientific | 2012 |
| Siskin Limited | Professional & scientific | 2023 |
| SJ & L Marjoram Limited | Construction | 2009 |
| SJB Electrical Services Limited | Manufacturing | 2020 |
| SJM Property East Ltd | Real estate | 2019 |
| Sknue Limited | Other services | 2025 |
| Snipercraft Limited | Extraterritorial | 1998 |
| Soul Cafe Harleston Ltd | Hospitality | 2025 |
| South Elmham Hall Farms Limited | Agriculture & fishing | 1965 |
| Speak Cloud Ltd | Information & communication | 2025 |
| Spicule Ltd | Administrative & support | 2016 |
| Spindlers Instant Temporary Storage Limited | Administrative & support | 2016 |
| Springwood Trees Ltd | Agriculture & fishing | 2012 |
| SPS Services (Norwich) Ltd | Wholesale & retail | 2022 |
| SRW Tree and Landscaping Ltd | Administrative & support | 2015 |
| ST Edmunds Windows and Doors Ltd | Extraterritorial | 2023 |
| ST. Johns Meadow (Metfield) Residents Management Company Limited | Households | 2006 |
| Statement Works Limited | Professional & scientific | 2024 |
| Stedman Investments Limited | Real estate | 2021 |