| RSC Property Holdings Ltd | Financial services | 2019 |
| RSJ Installations Limited | Construction | 2014 |
| RSM Heating and Plumbing Ltd | Construction | 2023 |
| Rspca MID Norfolk & North Suffolk Branch Trading Ltd | Hospitality | 2021 |
| RST Restaurant Ltd | Administrative & support | 2017 |
| RSV Property Company Ltd | Real estate | 2021 |
| RT Consulting Services Limited | Professional & scientific | 2015 |
| RT Electrical Ltd | Construction | 2016 |
| RT Mech Ltd | Professional & scientific | 2026 |
| RTB Roofing & Building Ltd | Construction | 2009 |
| Rten Ltd | Construction | 2015 |
| RTG Capital Investments Ltd | Financial services | 2025 |
| RTH Property Holdings Ltd | Real estate | 2026 |
| Rthirteen Recruitment Ltd | Administrative & support | 2013 |
| RTJ Builders Ltd | Construction | 2009 |
| RTW Pipework Limited | Energy | 2016 |
| RUA (Commercial) Limited | Professional & scientific | 2015 |
| RUA (Residential) Limited | Professional & scientific | 2015 |
| RUA Construction Consultants Limited | Construction | 2023 |
| Ruari's Hair Salon Limited | Other services | 2018 |
| Rubberduckysnacks Limited | Information & communication | 2023 |
| Rubeza Ltd | Wholesale & retail | 2018 |
| Ruby 'N' Tink Limited | Information & communication | 2008 |
| Ruby Elite Training Ltd | Education | 2013 |
| Ruby Flames Entertainment Ltd | Arts & recreation | 2025 |
| Ruby Tuesdays Drayton Limited | Other services | 2025 |
| Ruby Tuesdays Hair Ltd | Other services | 2024 |
| Ruby Tuesdays Rentals Limited | Real estate | 2024 |
| Ruby's Tea Stall Norwich Ltd | Hospitality | 2024 |
| Rubyo Systems Limited | Information & communication | 2026 |
| Rudadoje Limited | Professional & scientific | 2020 |
| Rudgespares Limited | Manufacturing | 2009 |
| Rudlin Consulting Limited | Professional & scientific | 2009 |
| Rudra Global Limited | Administrative & support | 2025 |
| Rudytwos Limited | Wholesale & retail | 2018 |
| Rufftop Gardens Ltd | Hospitality | 2020 |
| RUI Xiang Limited | Hospitality | 2017 |
| Ruja Investments Limited | Professional & scientific | 2016 |
| Ruja Property Holdings Limited | Real estate | 2024 |
| Rulefinder.Net Ltd | Information & communication | 2014 |
| Rumblesushi Ltd | Information & communication | 2020 |
| Rummij Ltd | Information & communication | 2023 |
| Run Sports Limited | Information & communication | 2011 |
| Runway Accountants Limited | Professional & scientific | 2020 |
| Runway Colgar Limited | Professional & scientific | 2025 |
| Runway Mistry Limited | Professional & scientific | 2025 |
| Rupali Indian Limited | Hospitality | 2018 |
| Rupeka Limited | Professional & scientific | 2016 |
| Rupert Holmes Consultancy Limited | Construction | 2011 |
| Rural Homes Norfolk & Suffolk Ltd | Hospitality | 2018 |
| Rural Tattoo Company Ltd | Arts & recreation | 2026 |
| Ruraladvice Ltd | Professional & scientific | 2012 |
| Ruralpod Media Limited | Professional & scientific | 2024 |
| RUS Electrical Services Ltd | Construction | 2022 |
| Rusby Copeman Ltd | Construction | 2014 |
| Ruseman Offshore Ltd | Mining & quarrying | 2013 |
| Rush Clearances Limited | Transport & logistics | 2022 |
| Russell Beaumont Associates Limited | Financial services | 2015 |
| Russell Civil Engineering Ltd | Construction | 2015 |
| Russell House and Jetty Street Management Company Limited | Real estate | 2007 |
| Russell Hubbard Electrical Ltd | Construction | 2022 |
| Russell Properties (Anglia) Ltd | Construction | 2025 |
| Russell Properties Limited | Professional & scientific | 2013 |
| Russell Property Developments Limited | Professional & scientific | 2015 |
| Russen & Hill Estate Agents Limited | Real estate | 2020 |
| Russetts Group Limited | Financial services | 2021 |
| Rustic Hire Ltd | Arts & recreation | 2015 |
| Ruth Brennan Architecture Limited | Professional & scientific | 2011 |
| Rutland Gate Property Limited | Real estate | 2022 |
| Rutter Gray Consultancy Limited | Administrative & support | 2016 |
| RVA Invest Ltd | Financial services | 2024 |
| Rvhservices Limited | Construction | 2025 |
| RVK Properties BTL Limited | Real estate | 2019 |
| Rvlr Limited | Information & communication | 2016 |
| RW & TW Properties Limited | Real estate | 2012 |
| RW Hairdressing Ltd | Other services | 2019 |
| RW Mobile Hairdressing Ltd | Other services | 2021 |
| RWD Click Ltd | Administrative & support | 2013 |
| RWD Design Limited | Professional & scientific | 2005 |
| RWF Automotive Ltd | Wholesale & retail | 2021 |
| RWH Family Investment Company | Financial services | 2017 |
| RWH Investments Limited | Financial services | 2020 |
| RWK Construction Consultancy Ltd | Professional & scientific | 2026 |
| Rwmh Limited | Health & social care | 2010 |
| RWP Norwich RTM Company Limited | Households | 2025 |
| RX Locuming Ltd | Health & social care | 2021 |
| RX18 Ltd | Construction | 2013 |
| Ryamat Ltd | Transport & logistics | 2025 |
| Ryan Books Ltd | Education | 2005 |
| Ryan Davis Building Ltd | Administrative & support | 2015 |
| Ryan Gaffney Ltd | Professional & scientific | 2023 |
| Ryan Newell Design Ltd | Information & communication | 2019 |
| Ryan Woods Plumbing & Heating Limited | Construction | 2024 |
| Ryde Pets Ltd | Wholesale & retail | 2016 |
| Rydepal Ltd | Transport & logistics | 2024 |
| Ryft Games Ltd | Wholesale & retail | 2022 |
| Ryley Bros Limited | Water & waste | 2016 |
| Rylston Road Limited | Real estate | 2000 |
| Rymak Investments Limited | Administrative & support | 2018 |
| Rymak Limited | Construction | 2019 |