| Retrojet Group Ltd | Construction | 2018 |
| Reuben Narayan Ltd | Health & social care | 2021 |
| Revibe Renovations Ltd | Construction | 2026 |
| Revlac (2013) Limited | Real estate | 2013 |
| Revolution Motorcycles Ltd | Wholesale & retail | 2024 |
| Revolve Motors Ltd | Wholesale & retail | 2024 |
| REVS27 Limited | Health & social care | 2022 |
| Reygar Limited | Professional & scientific | 2012 |
| RGG Ltd | Construction | 2018 |
| Rgss Limited | Wholesale & retail | 2015 |
| RHE Engineering Ltd | Professional & scientific | 2024 |
| RHR Recycling Limited | Other services | 2015 |
| Rhydal Limited | Real estate | 2018 |
| Richard Fausto Creative Ltd | Manufacturing | 2023 |
| Richard Keenan Motors Limited | Wholesale & retail | 2003 |
| Richard Palmer Motors (Norfolk) Limited | Wholesale & retail | 2013 |
| RIG Works Ltd | Administrative & support | 2019 |
| Right Car Right Price Ltd | Wholesale & retail | 2017 |
| Rise Above Constructs Ltd | Real estate | 2024 |
| Riseborough Law Consulting Limited | Professional & scientific | 2025 |
| Rishi Holdings Ltd | Financial services | 2022 |
| Rishi Shah Ltd | Health & social care | 2016 |
| Ritu Bedi-Dhillon Ltd | Health & social care | 2020 |
| River View Homes (GY) Limited | Extraterritorial | 2020 |
| Riverrun Consultancy Ltd | Professional & scientific | 2025 |
| Riverside Cars & Commercial Ltd | Wholesale & retail | 2025 |
| Riverside Cars Norfolk Ltd | Wholesale & retail | 2021 |
| Riverside Roofing and Maintenance Ltd. | Construction | 1998 |
| RIX Transport Solutions Ltd | Transport & logistics | 2023 |
| RJ Flavours Limited | Hospitality | 2026 |
| RJ Maintenance Solutions Ltd | Construction | 2025 |
| RJK Healthcare Limited | Health & social care | 2020 |
| Rlkd Digital Investments Ltd | Financial services | 2025 |
| RM Pipe Services Limited | Professional & scientific | 2015 |
| RMA Global Limited | Wholesale & retail | 2006 |
| Road Co. UK Limited | Information & communication | 2025 |
| Robert a. Hunt Limited | Financial services | 2019 |
| Robsteen Limited | Real estate | 2020 |
| Rock P&H Services Ltd | Construction | 2018 |
| Roco Engineering Services Limited | Professional & scientific | 2003 |
| Rolling Creations Ltd | Wholesale & retail | 2025 |
| Roman Baltic Stop Ltd | Wholesale & retail | 2025 |
| Roof Restore East Anglia Limited | Construction | 2014 |
| ROOT3 Lighting & Electrical Ltd | Manufacturing | 2001 |
| ROOT57 Limited | Health & social care | 2019 |
| Ropex International Ltd | Construction | 2021 |
| Rosanna Maddison Design Ltd | Professional & scientific | 2023 |
| Roseacre (Ormesby) Limited | Hospitality | 1992 |
| Rosie Roofing Limited | Construction | 1997 |
| Rosie's Recovery's Ltd | Wholesale & retail | 2024 |
| Rouse Properties (Norfolk) Limited | Real estate | 2024 |
| Rouse Scaffolding Limited | Construction | 2016 |
| Rowan Insulations Limited | Construction | 1993 |
| Rowe Engineering Services Ltd | Construction | 2026 |
| Rowmac Services Limited | Professional & scientific | 2018 |
| RSS Engineering Solutions Limited | Mining & quarrying | 2015 |
| Rude GUY Ltd | Information & communication | 2021 |
| RUI Simoes Ltd | Transport & logistics | 2019 |
| Rumlot Education Limited | Education | 2011 |
| Rumor Consultancy Limited | Information & communication | 2015 |
| Runham Garage Limited | Wholesale & retail | 2015 |
| Rupex Ltd | Construction | 2021 |
| Rushmere Electrical Limited | Construction | 2003 |
| Russell and William West Limited | Real estate | 1946 |
| Russell Marine (Acle) Limited | Other services | 1997 |
| Ruune Logistics Limited | Mining & quarrying | 2023 |
| Ryaisa Ltd | Transport & logistics | 2025 |
| Ryan Holt Limited | Professional & scientific | 2024 |
| Ryana Construction Ltd | Construction | 2023 |
| Ryans Developments Ltd | Construction | 2024 |
| S & BH Services Ltd | Administrative & support | 2008 |
| S & C Moore Farming Ltd | Agriculture & fishing | 2012 |
| S & D Smiles Limited | Health & social care | 2023 |
| S & D.M Properties Ltd | Real estate | 2022 |
| S and J Contractors (Anglia) Limited | Construction | 2006 |
| S Barnes Welding Ltd | Manufacturing | 2026 |
| S Brown Solutions Limited | Professional & scientific | 2025 |
| S COE Engineering Limited | Professional & scientific | 2022 |
| S Covill Limited | Health & social care | 2014 |
| S D S Services Ltd | Mining & quarrying | 2008 |
| S D S Storeage Limited | Administrative & support | 2024 |
| S Grimmer Carpentry and Building Services Limited | Construction | 2020 |
| S Hood Services Ltd | Mining & quarrying | 2026 |
| S J Edmunds Limited | Construction | 2012 |
| S M Bryenton and SON Limited | Construction | 2003 |
| S M G Engineering Support Services Limited | Professional & scientific | 2024 |
| S P Measurement Consultancy Services Ltd | Mining & quarrying | 2025 |
| S Randell Services Limited | Professional & scientific | 2016 |
| S Reade Limited | Health & social care | 2020 |
| S S & S Thompson Limited | Financial services | 2013 |
| S&A Fabian Ltd | Financial services | 2019 |
| S&C Group Limited | Professional & scientific | 2025 |
| S&M Brickwork Ltd | Construction | 2025 |
| S. a. S. East Anglia Ltd | Other services | 2022 |
| S.Allen & SON Decorating Contractors Limited | Construction | 2022 |
| S.C Motor Repairs Ltd | Wholesale & retail | 2024 |
| S.E.C. (Wisbech) Limited | Extraterritorial | 2019 |
| S2K Anglia Ltd | Hospitality | 2024 |
| S4K Anglia Ltd | Hospitality | 2024 |
| SAB Real Estate Ltd | Real estate | 2020 |