| PT Intelligence Limited | Information & communication | 2026 |
| Pteron Aviation Limited | Transport & logistics | 2023 |
| Pulsenotes Limited | Education | 2013 |
| Pvpk Property Limited | Real estate | 2025 |
| Quadraheat Ltd | Construction | 2020 |
| Queens Meadow (the Glebe Hockering) Management Company Limited | Households | 2017 |
| Quick WOK Ltd | Hospitality | 2025 |
| Quote Four Ltd | Financial services | 2014 |
| R & J Farms Limited | Agriculture & fishing | 2015 |
| R & M International Helicopters Limited | Arts & recreation | 1989 |
| R Clements & SON Limited | Manufacturing | 2005 |
| R E Associates Limited | Professional & scientific | 2012 |
| R E Woods & SON Cabinetmakers Limited | Manufacturing | 2017 |
| R Edge Estates Ltd | Real estate | 2024 |
| R F Truck Services Ltd. | Construction | 2024 |
| R J Water Solutions Limited | Water & waste | 2017 |
| R M Atherton Limited | Financial services | 2022 |
| R M S Driving Services Ltd | Transport & logistics | 2015 |
| R. S. Baker & Sons Limited | Construction | 1963 |
| R.B. Watts Roofing Contractors & Merchants Limited | Construction | 1999 |
| R.H. Duffield Waste Services Limited | Water & waste | 2003 |
| R.Stephan Limited | Wholesale & retail | 2013 |
| R.U.K Wind Solutions Ltd | Manufacturing | 2015 |
| R.V.D Management Ltd | Households | 2014 |
| R.W. Duffield Ltd | Construction | 2003 |
| Rainbow Assured Ltd | Education | 2024 |
| RAJ Cleaning and Decorating Limited | Administrative & support | 2025 |
| Rake OUT & Repoint Limited | Construction | 2025 |
| Raphael Neill Ltd | Professional & scientific | 2014 |
| Rapid Resource Solutions Ltd | Administrative & support | 2023 |
| Ravenhill Systems Limited | Information & communication | 2012 |
| Ravens 3D Printing Limited | Manufacturing | 2025 |
| Ravus Limited | Information & communication | 2020 |
| RAW Gymnastics Dereham Ltd | Education | 2025 |
| RAY Lake Electrical Limited | Construction | 2010 |
| RAY Tuttle (Lift Services) Limited | Manufacturing | 2007 |
| Rebel Systems Limited | Information & communication | 1994 |
| Recommended in Ltd | Information & communication | 2021 |
| Recruit Ventures Limited | Professional & scientific | 2011 |
| Red Devil Services (UK) Limited | Professional & scientific | 2014 |
| RED7 Inshore Diving Ltd | Construction | 2015 |
| Redevelop Construction Ltd | Construction | 2025 |
| Redfield's Fruit and Vegetables Limited | Wholesale & retail | 2020 |
| REG Enterprises Ltd | Professional & scientific | 2016 |
| Reipp Holdings Ltd | Financial services | 2024 |
| Render Restoration Ltd | Construction | 2016 |
| Repair Logic Ltd | Wholesale & retail | 2025 |
| Research Lighting Limited | Professional & scientific | 2001 |
| Resolute Recruitment Ltd | Administrative & support | 2019 |
| Resonate Records Ltd | Information & communication | 2025 |
| Retreatsnorfolk Ltd | Hospitality | 2022 |
| Revive Wellness Cafe Ltd | Hospitality | 2026 |
| RG Construction Ltd | Construction | 2004 |
| RH Properties Norfolk Ltd | Real estate | 2024 |
| RH Roofing Limited | Construction | 2011 |
| Rhys Niemann Fitness Ltd | Education | 2023 |
| Richard Holmes Consulting Limited | Professional & scientific | 2001 |
| Richard Tidy & Partners Wealth Management Ltd | Financial services | 2021 |
| Richardson Tree Surgery Limited | Agriculture & fishing | 2016 |
| Ride and Glide International Ltd | Wholesale & retail | 2019 |
| Rite Gear Limited | Manufacturing | 2010 |
| Riverside (Scarning) Development Management Company Limited | Households | 2007 |
| Rjmwind Ltd | Manufacturing | 2024 |
| RKD Partnership Ltd | Other services | 2015 |
| RM Energy Solutions Limited | Manufacturing | 2026 |
| Road and Race Automotive Ltd | Wholesale & retail | 2019 |
| Road and Rail Steam Services Ltd | Arts & recreation | 2010 |
| ROB Millar Carpentry Limited | Construction | 2005 |
| Robinson Consulting Ltd | Professional & scientific | 2020 |
| Rockinghorse Daycare Limited | Education | 2012 |
| Roof Box Systems Ltd | Other services | 2015 |
| Rooted Hosting Ltd | Information & communication | 2026 |
| Rose 360 Limited | Administrative & support | 2020 |
| Rose Rentals (2020) Ltd | Real estate | 2020 |
| Rosecroft Creative Ltd | Arts & recreation | 2021 |
| Rosemount Farms Ltd | Agriculture & fishing | 2015 |
| Rotorpart Ltd | Wholesale & retail | 2021 |
| ROY Sykes Consulting LLP | | 2020 |
| Rpfca Limited | Professional & scientific | 2008 |
| RPJ Brickworx Limited | Construction | 2023 |
| RQ Capital Limited | Construction | 2012 |
| RQ Capital Loans Limited | Administrative & support | 2017 |
| RSB Properties (Norfolk) Ltd | Real estate | 2025 |
| RTB Holdings Ltd | Financial services | 2023 |
| Rtcal Ltd | Manufacturing | 2018 |
| RTS Rural Contractors Ltd | Agriculture & fishing | 2019 |
| Rural Ventures Limited | Agriculture & fishing | 2018 |
| RV 132 Limited | Administrative & support | 2025 |
| RV 133 Limited | Administrative & support | 2025 |
| RV 134 Limited | Administrative & support | 2025 |
| RV 135 Limited | Administrative & support | 2025 |
| RV 136 Limited | Administrative & support | 2025 |
| RV 137 Limited | Administrative & support | 2026 |
| RV 138 Limited | Administrative & support | 2026 |
| RV 139 Limited | Administrative & support | 2026 |
| RV 140 Limited | Administrative & support | 2026 |
| RV 141 Limited | Administrative & support | 2026 |
| RV 200 Ltd | Financial services | 2024 |
| RWE Restorations Ltd | Wholesale & retail | 2024 |
| RWP Innovations Ltd | Administrative & support | 2018 |