| Prolan Builders Limited | Construction | 2015 |
| Property 192 Limited | Construction | 2012 |
| Proquip Direct Limited | Wholesale & retail | 1997 |
| Prospect House Surveyors Limited | Professional & scientific | 2005 |
| Protek Consulting Limited | Professional & scientific | 2017 |
| Providence Court Management Limited | Households | 2022 |
| PRS Properties Ltd | Real estate | 2015 |
| PSD International Limited | Professional & scientific | 2017 |
| PSI Solutions Limited | Extraterritorial | 1996 |
| PTC Engineering Solutions Ltd | Professional & scientific | 2022 |
| Pulham Farms Limited | Administrative & support | 2008 |
| Pulse Cinemas Holdings Ltd | Professional & scientific | 2011 |
| Pulse Cinemas Limited | Wholesale & retail | 2003 |
| Purely Finance Ltd | Financial services | 2016 |
| Pursestrings Limited | Other services | 2002 |
| QLS (Holdings) Limited | Financial services | 2015 |
| QLS - Quality Liaison Services Limited | Other services | 1994 |
| QLS Automotive Holdings Ltd | Other services | 2020 |
| Quack! Design Limited | Professional & scientific | 2022 |
| Quality Response Limited | Administrative & support | 1999 |
| Quick Track Farm Costings Limited | Information & communication | 2021 |
| Quite Frankly My Dear Ltd | Professional & scientific | 2023 |
| R & H Property Services Ltd | Real estate | 2025 |
| R and D International Limited | Professional & scientific | 2015 |
| R G-Rackham Limited | Construction | 2008 |
| R J M Handyman Limited | Administrative & support | 2010 |
| R O I and Green Limited | Administrative & support | 2020 |
| R. Pratt & Sons Limited | Agriculture & fishing | 1956 |
| R.S. Burton Limited | Agriculture & fishing | 2002 |
| R.S. Munday Joinery and Maintenance Limited | Real estate | 1984 |
| Rachel Mccall Limited | Administrative & support | 2006 |
| Racing Promotions & Incentives Limited | Administrative & support | 1995 |
| Racker Investments Limited | Real estate | 2018 |
| Rackham Builders Limited | Extraterritorial | 2008 |
| Rackham Court Management Company Limited | Households | 2021 |
| Rackham Holdings Limited | Extraterritorial | 1999 |
| Rackwick Ltd | Professional & scientific | 2019 |
| Rainbows Day Nursery (Diss) Limited | Education | 2024 |
| Ramsay Holmes Doors Ltd | Construction | 2021 |
| Randombadge Company Limited | Wholesale & retail | 1993 |
| Rands Retro Ltd | Construction | 2015 |
| RAS Scientific Ltd | Professional & scientific | 2026 |
| Ratiobox Accounting Services Limited | Professional & scientific | 2016 |
| Ratiobox Holdings Limited | Professional & scientific | 2016 |
| Ratiobox Limited | Professional & scientific | 2016 |
| Ratiobox Property Management Limited | Real estate | 2016 |
| Ratiobox Shared Services Limited | Information & communication | 2022 |
| Ravi Convenience Store Limited | Wholesale & retail | 2017 |
| RC Property Maintenance (Anglia) Limited | Construction | 2019 |
| Rc-Heating Ltd | Construction | 2022 |
| Reads Harleston Limited | Real estate | 2008 |
| Reads Property Developments Ltd | Real estate | 1982 |
| Rebel EV Ltd | Administrative & support | 2022 |
| Rectory Green Financial Services Ltd | Financial services | 2009 |
| Red FOX Property Group Ltd | Real estate | 2021 |
| Red House Farm Holiday Lets Limited | Hospitality | 2018 |
| Red Ruckas Ltd | Hospitality | 2023 |
| Reeves Yard Development Limited | Construction | 2017 |
| Regent House Holdings Limited | Real estate | 2024 |
| Regent House Leaseholding Limited | Real estate | 2024 |
| Rent a RIM Ltd | Wholesale & retail | 2020 |
| Rents Property Management Services Ltd | Households | 2024 |
| RES Legata Holdings Ltd | Real estate | 2024 |
| RES Legata Ltd | Real estate | 2024 |
| Restgrove Properties Limited | Real estate | 2003 |
| Resthaus Ltd | Real estate | 2023 |
| Rhino Flues Ltd | Other services | 2024 |
| Richard Burton Specialised Machinery Limited | Manufacturing | 2013 |
| Richard Walpole Roofing Limited | Construction | 2019 |
| Richmond Countermeasures Ltd | Public administration | 2011 |
| Richmond Defence Systems Limited | Public administration | 2012 |
| Rickards Financial Planning Ltd | Financial services | 2014 |
| Rikki Webster Ltd | Professional & scientific | 2020 |
| Rise Irrigation Limited | Construction | 2023 |
| Risk Management Made Simple Limited | Information & communication | 2024 |
| Ritanna Ltd | Transport & logistics | 2015 |
| Rivendell Projects Limited | Wholesale & retail | 2002 |
| River Waveney Trust | Other services | 2012 |
| Riviere Estate Limited | Administrative & support | 2014 |
| RJM Construction Services Ltd | Construction | 2016 |
| RJP Clarity Ltd | Real estate | 2020 |
| Robert Beck Financial Services Limited | Financial services | 2003 |
| Robert Mitchell Builders Limited | Construction | 2020 |
| Robert Murton Construction Ltd | Construction | 2023 |
| Robinsons Mill Limited | Real estate | 2002 |
| Rocmann Limited | Construction | 2021 |
| Rogers Davidson Limited | Real estate | 2004 |
| Rojachka Ltd | Manufacturing | 2023 |
| Rojdam Limited | Hospitality | 2025 |
| Rolling Stone Limited | Wholesale & retail | 2008 |
| Roman Eservices Ltd | Professional & scientific | 2020 |
| RON Ellis & Sons Limited | Construction | 2024 |
| Rookery Farm Limited | Agriculture & fishing | 1996 |
| Roots Activities Limited | Arts & recreation | 2018 |
| Roots and Wings Education Limited | Financial services | 2017 |
| Rose and North Limited | Financial services | 2012 |
| Rotarex UK Ltd | Professional & scientific | 2018 |
| Rotary Rebuild Ltd | Wholesale & retail | 2011 |
| ROY Allen (Engineering) Limited | Construction | 1973 |
| ROY Allen (Holdings) Limited | Financial services | 2016 |