| Renenergy Limited | Energy | 2014 |
| Renesola UK Limited | Wholesale & retail | 2013 |
| Renew & Bloom Ltd | Wholesale & retail | 2024 |
| Renewable Advisory Experts Limited | Professional & scientific | 2025 |
| Renewable Connections Developments Limited | Construction | 2019 |
| Renewable Energy Generation Limited | Energy | 2011 |
| Renewable Energy Marine Consultant Ltd | Professional & scientific | 2025 |
| Renewable Energy Trading Limited | Energy | 2011 |
| Renewable Green Power Limited | Energy | 2011 |
| Renewables for Norfolk Ltd | Real estate | 2018 |
| Renewed Living Ltd | Wholesale & retail | 2024 |
| RENGRID2030 Ltd | Professional & scientific | 2022 |
| Rennico Limited | Information & communication | 2010 |
| Rennie Build Ltd | Construction | 2021 |
| Rennie Construction Ltd | Construction | 2014 |
| Renosteel Construction Limited | Construction | 1985 |
| Renovates Holdings Ltd | Financial services | 2024 |
| Renovation Redefined Limited | Real estate | 2018 |
| Renovo Renovations and Decorating Ltd | Construction | 2023 |
| Rensport Ltd | Wholesale & retail | 2019 |
| Rent Property Ltd | Extraterritorial | 2012 |
| Rent-A-Till Limited | Other services | 1974 |
| Rental Asset Management Ltd | Real estate | 2024 |
| Rental Property MAX Limited | Real estate | 2020 |
| Rentals 4 Less Norfolk Ltd | Real estate | 2022 |
| Rentech Properties Ltd | Real estate | 2021 |
| Rentier Limited | Real estate | 2026 |
| Renvision Limited | Administrative & support | 2016 |
| REO Consultancy Ltd | Construction | 2023 |
| Repair Café Norwich CIC | Other services | 2022 |
| Repair LAB Ltd | Wholesale & retail | 2023 |
| Repal Co-Gen (UK) Limited | Energy | 2014 |
| Repattern Limited | Professional & scientific | 2019 |
| Repco Roof Tiles Limited | Manufacturing | 2012 |
| Repeat Holdings Ltd | Extraterritorial | 2022 |
| Replacement Vehicle Solutions Ltd | Administrative & support | 2009 |
| Replay Health Collective Ltd | Other services | 2013 |
| Replay Retreats Ltd | Other services | 2026 |
| Report Media Group Ltd | Information & communication | 2022 |
| Reptile Management and Logistics Ltd | Agriculture & fishing | 2020 |
| Repton Fitness Gear Ltd | Wholesale & retail | 2017 |
| Repton Property Developments Limited | Construction | 2017 |
| Require I.T. Limited | Manufacturing | 2008 |
| RES Divina Healthcare Limited | Health & social care | 2022 |
| RES Violae Limited | Real estate | 2025 |
| Resch Ltd | Transport & logistics | 2019 |
| Rescue Medical Solutions Ltd | Education | 2023 |
| Rescue Plumbers Plus Ltd | Construction | 2020 |
| Research Driven Retail Ltd | Wholesale & retail | 2019 |
| Research Grid Ltd | Information & communication | 2018 |
| Researchr Ltd | Professional & scientific | 2014 |
| Resell Concierge Ltd | Information & communication | 2020 |
| Reserved Spirits Limited | Wholesale & retail | 2017 |
| Reset Saunas Ltd | Other services | 2025 |
| Residents Obsh Ltd | Households | 2019 |
| Resilient Pathways Ltd | Health & social care | 2022 |
| Resin Rock Ltd | Manufacturing | 2024 |
| Resolute Corporate Holdings Limited | Professional & scientific | 2007 |
| Resolute Management Consultants Ltd | Wholesale & retail | 2020 |
| Resolute Properties Limited | Real estate | 2013 |
| Resolution Consultants Limited | Information & communication | 2020 |
| Resource General Stores Limited | Wholesale & retail | 2019 |
| Respect Tour Ltd | Education | 2019 |
| Responsiblekami Ltd | Health & social care | 2024 |
| Restart in Tech Ltd | Professional & scientific | 2025 |
| Resteemed Ltd | Professional & scientific | 2024 |
| Restoration Property Investments Ltd | Real estate | 2021 |
| Restorative Justice Council Limited | Other services | 2001 |
| Restore Empathy Healthcare Ltd | Health & social care | 2022 |
| Restored, Equipped, Strong, Team (Rest) CIC | Health & social care | 2017 |
| Restoric Design Ltd | Wholesale & retail | 2023 |
| Retail Knowledge (Media) Ltd | Administrative & support | 2012 |
| Retail Park Services Limited | Real estate | 1999 |
| Retail Retreats Limited | Administrative & support | 2024 |
| Retail Risk Events Ltd | Professional & scientific | 2017 |
| Retail System Services Limited | Manufacturing | 2002 |
| Retaqr Ltd | Information & communication | 2024 |
| Retelligence Ltd | Administrative & support | 2024 |
| Retford Park Hospitality Ltd | Hospitality | 2021 |
| Retro Pinata Limited | Professional & scientific | 2017 |
| Retro Replay Limited | Arts & recreation | 2019 |
| Retrofit & Coordination Ltd | Construction | 2019 |
| Retronics Ltd | Manufacturing | 2019 |
| Retrotronics Ltd | Wholesale & retail | 2021 |
| Reuzer Ltd | Information & communication | 2020 |
| Revamp Projects Limited | Construction | 2006 |
| Revel Studios Ltd | Information & communication | 2025 |
| Revellrevell Limited | Information & communication | 2016 |
| Reverb Digital Ltd | Information & communication | 2019 |
| Revgen Ltd | Professional & scientific | 2020 |
| Revilo Norfolk Limited | Professional & scientific | 2025 |
| Revilo Property Group Ltd | Real estate | 2019 |
| Revive Exteriors Ltd | Construction | 2018 |
| Revo UK Limited | Education | 2020 |
| Revolution Exhausts Ltd | Manufacturing | 2024 |
| Revthreads Ltd | Wholesale & retail | 2021 |
| Revup Online Ltd | Information & communication | 2022 |
| Revved & Revived Limited | Wholesale & retail | 2025 |
| Rewardpay Ltd | Information & communication | 2019 |
| Rewardpay Media Ltd | Wholesale & retail | 2007 |