| Quaymount Limited | Agriculture & fishing | 1975 |
| Quercast Sawmilling Limited | Agriculture & fishing | 2022 |
| Quinteq Ltd | Construction | 2013 |
| R & C Mellor Ltd | Agriculture & fishing | 2014 |
| R & C Pigs Ltd | Agriculture & fishing | 2022 |
| R & KA Investments Limited | Real estate | 2023 |
| R & L Engineering Limited | Manufacturing | 2003 |
| R B Trucks Limited | Wholesale & retail | 2007 |
| R C Clean Ltd | Administrative & support | 2025 |
| R C Finishing Plant Limited | Administrative & support | 2019 |
| R Cars Taxi Service Ltd | Transport & logistics | 2023 |
| R Collison Builders Ltd | Construction | 2006 |
| R Corley Builders Limited | Construction | 2009 |
| R E R Catering Ltd | Hospitality | 2018 |
| R J F Electrical Contractors Ltd | Construction | 2017 |
| R J Rasberry Electrical Ltd | Construction | 2021 |
| R J Tucker Property Limited | Construction | 2025 |
| R K Properties (Norwich) Ltd | Construction | 2025 |
| R King Builders Ltd | Construction | 2020 |
| R M Hayes Limited | Other services | 2003 |
| R P Compliance Testing Ltd | Construction | 2011 |
| R Smithy Engineering Limited | Professional & scientific | 2024 |
| R T Engineering Ltd | Professional & scientific | 2023 |
| R W Bailey Ltd | Construction | 2003 |
| R W Engineering Norfolk Limited | Manufacturing | 2012 |
| R W Property Investments Ltd | Real estate | 2018 |
| R&F Group Ltd | Construction | 2023 |
| R&I Transport Ltd | Transport & logistics | 2026 |
| R&J Trans Ltd | Transport & logistics | 2016 |
| R&S Engineering Motor Services Limited | Construction | 2024 |
| R&S Sourcing Ltd | Real estate | 2025 |
| R-Line Services Ltd | Wholesale & retail | 2020 |
| R. Aldridge Building Services Limited | Construction | 2009 |
| R. G. Produce Limited | Agriculture & fishing | 2007 |
| R.A.Batterham Ltd | Manufacturing | 2003 |
| R.G.D. Engineering Co Limited | Manufacturing | 1999 |
| R.G.D. Holdings Limited | Financial services | 1973 |
| R.H. Thaxter Limited | Wholesale & retail | 1975 |
| R.J. Flack Limited | Manufacturing | 1999 |
| R.Kalabina Property Services Limited | Real estate | 2014 |
| R.S.C Norfolk Ltd | Wholesale & retail | 2024 |
| R.V & P.J Angell Holdings Limited | Administrative & support | 2003 |
| R.W Haulage (King's Lynn) Limited | Transport & logistics | 2011 |
| Rack Inspect Ltd | Professional & scientific | 2019 |
| RACKING365 (UK) Ltd | Wholesale & retail | 2025 |
| Radius Fall Protection Ltd | Professional & scientific | 2025 |
| Radius Tools Limited | Manufacturing | 2025 |
| Raduro Ltd | Health & social care | 2026 |
| RAE Rudd Limited | Construction | 2002 |
| Raecheljeni Limited | Health & social care | 2022 |
| Rage International Motorsport Limited | Arts & recreation | 2007 |
| Rainbow Amusement Park Ltd | Arts & recreation | 2014 |
| Raisin Electrical and Data Services Limited | Construction | 2003 |
| Rajasthan Spice Ltd | Hospitality | 2018 |
| Ralexi Ltd | Administrative & support | 2018 |
| Ramamala Holdings Ltd | Wholesale & retail | 2024 |
| Ramey Court Limited | Households | 1989 |
| Ramsey Education Limited | Education | 2024 |
| Ramzis Transport Ltd | Transport & logistics | 2025 |
| Ransonmoor Farm Limited | Agriculture & fishing | 1970 |
| Rars Private Ltd | Health & social care | 2025 |
| RAY Wing Towers Limited | Construction | 2018 |
| RBC Norfolk Ltd | Administrative & support | 2017 |
| RCH (East Anglia) Limited | Transport & logistics | 2013 |
| RCH Transport Limited | Transport & logistics | 2024 |
| RCL - Rock Constructions EOT Ltd | Administrative & support | 2024 |
| RCR Transport Ltd | Transport & logistics | 2020 |
| RCS Communication Solutions Limited | Information & communication | 2011 |
| RDA Poultry Limited | Agriculture & fishing | 2025 |
| Read Scientific Limited | Administrative & support | 2003 |
| Real Safety Today Limited | Administrative & support | 2015 |
| Really Intelligent Productions Limited | Arts & recreation | 1989 |
| Rebellion Brasserie Limited | Hospitality | 2025 |
| Rebellion Street Food Ltd | Hospitality | 2025 |
| Rebro Construction Limited | Construction | 2021 |
| Rectory Properties (Ashwicken) Ltd | Real estate | 2025 |
| Red Cat Developments Limited | Construction | 2019 |
| Red Cat Hotel Limited | Hospitality | 2002 |
| Red Chilli Norfolk Limited | Hospitality | 2025 |
| Red Frog Developments Limited | Real estate | 2015 |
| Red Kite Enterprises Ltd | Professional & scientific | 2020 |
| Red Lion PUB (Broughton) Ltd | Hospitality | 2026 |
| Red Zone Secure Risk & Facility Solutions Ltd | Administrative & support | 2017 |
| Redgate Heights Management (Hunstanton) Limited | Households | 1991 |
| Redlands Court (Heacham) Management Services Limited | Real estate | 2007 |
| Redmond Property Ltd | Real estate | 2016 |
| Reeds Renovations Ltd | Construction | 2025 |
| Reepham Rentals Limited | Real estate | 2018 |
| Regis Court (King's Lynn) Management Company Limited | Households | 1989 |
| Rejuvenage Aesthetics Limited | Other services | 2025 |
| Reloved Norfolk Limited | Wholesale & retail | 2019 |
| Remaanavi Ltd | Health & social care | 2014 |
| Remechanics Ltd | Wholesale & retail | 2025 |
| Renewable Homes Limited | Other services | 2018 |
| Renshaw Close Management Company Limited | Real estate | 2015 |
| Rentnest Partners Ltd | Real estate | 2024 |
| Renway Group Limited | Professional & scientific | 2022 |
| Replenish (Norfolk) Limited | Wholesale & retail | 2021 |
| Residents Management (NO. 81) Limited | Real estate | 1986 |
| Resort Entertainments Ltd | Arts & recreation | 2012 |