| Rumaisa Designers Ltd | Wholesale & retail | 2024 |
| Rumarkable Limited | Hospitality | 2022 |
| Rumi International Ltd | Wholesale & retail | 2025 |
| Rumko Limited | Information & communication | 2009 |
| Rumko Property Limited | Real estate | 2025 |
| Runstate Limited | Information & communication | 2025 |
| Runway Business Park Management Company Limited | Real estate | 2006 |
| Ruparel Investments Limited | Real estate | 2019 |
| Rupert David and Company Limited | Construction | 2014 |
| Rupert David Ltd. | Construction | 2005 |
| Rupesh 358 Limited | Information & communication | 2020 |
| Ruphico Ltd | Health & social care | 2024 |
| Ruskington Poultry Farm Ltd | Agriculture & fishing | 2025 |
| Ruspi Renovations Ltd | Construction | 2025 |
| Russel Care Ltd | Health & social care | 2025 |
| Russell Accounting Solutions Limited | Professional & scientific | 2019 |
| Russell Fish Limited | Professional & scientific | 2015 |
| Russell Group Holdings Limited | Wholesale & retail | 2024 |
| Russell Oak & Steel Ltd | Manufacturing | 2014 |
| Russell VB Limited | Manufacturing | 2023 |
| Rusty Nails Bespoke Ltd | Construction | 2017 |
| Rutendo Limited | Health & social care | 2010 |
| Ruth Day Atelier Ltd | Manufacturing | 2024 |
| Ruth Grace Properties Ltd | Real estate | 2022 |
| Ruth Tiso Initiative CIC | Health & social care | 2025 |
| Rutland Court (Matlock) Ltd | Households | 1998 |
| Rutland Garden Classics Limited | Water & waste | 2014 |
| Rutland Windows Limited | Construction | 2009 |
| Rutwood Ltd | Financial services | 2024 |
| RV Construction Ltd | Construction | 2016 |
| RVJ (UK) Limited | Wholesale & retail | 2012 |
| RVL Airtech Limited | Manufacturing | 1986 |
| RVL Aviation Limited | Transport & logistics | 1985 |
| RVL Survey Limited | Transport & logistics | 1996 |
| RW Cars Holdings Limited | Financial services | 2023 |
| RW Electrical & Security Services Ltd | Construction | 2014 |
| RW Electronics Limited | Wholesale & retail | 2024 |
| RW Healy Consulting Limited | Professional & scientific | 2024 |
| RW Luxury Ltd | Wholesale & retail | 2023 |
| RWF Properties Ltd | Real estate | 2017 |
| Rwmc Installations Limited | Information & communication | 2011 |
| RX the Tenth Planet Ltd | Information & communication | 2021 |
| Ryall Holdings Ltd | Professional & scientific | 2024 |
| Ryan Fredericks Contractors Ltd | Professional & scientific | 2019 |
| Ryanoku Ltd | Health & social care | 2014 |
| Ryans Investments Ltd | Financial services | 2023 |
| Rydal Manor Gardens (Management Company) Limited | Households | 2018 |
| Rydale Children's Nursery Ltd | Health & social care | 2019 |
| RYE Accountancy Limited | Professional & scientific | 2026 |
| RYE Developments Limited | Construction | 2007 |
| Ryecroft AULOL7 Limited | Real estate | 2022 |
| Ryhill Capital Limited | Real estate | 2025 |
| Ryhill Investments Ltd | Real estate | 2010 |
| Ryhill Properties Limited | Real estate | 2001 |
| Rykneld Metals Limited | Wholesale & retail | 1975 |
| Rykneld Tean Limited | Manufacturing | 1941 |
| Ryle & Co Holdings Ltd | Financial services | 2021 |
| Ryle Construction Ltd | Construction | 2022 |
| Ryloobaby Limited | Wholesale & retail | 2018 |
| Rymac Property Group Limited | Real estate | 2024 |
| Ryno Building Services Ltd | Construction | 2018 |
| Rystwood Retreats Ltd | Hospitality | 2024 |
| Ryze Media Limited | Information & communication | 2018 |
| RZA Retail Ltd | Wholesale & retail | 2024 |
| RZM 114 Ltd | Transport & logistics | 2025 |
| S & a Bristowe Ltd | Hospitality | 2019 |
| S & a Kaddara Ltd | Transport & logistics | 2025 |
| S & C Auto's Limited | Wholesale & retail | 2008 |
| S & C Foods (Leeds) Ltd | Hospitality | 2019 |
| S & D Services Ltd | Construction | 2016 |
| S & H Invictus Ltd | Wholesale & retail | 2026 |
| S & J Financial Management Limited | Financial services | 2006 |
| S & J Friends Civils Ltd | Construction | 2022 |
| S & J Friends Courier Ltd | Transport & logistics | 2025 |
| S & J Friends Driveways Ltd | Administrative & support | 2025 |
| S & J Lewin Limited | Wholesale & retail | 2006 |
| S & K Investments Limited | Real estate | 2013 |
| S & M Convenience Store INT Ltd | Wholesale & retail | 2024 |
| S & M Multiservices Ltd | Administrative & support | 2020 |
| S 500 Property (Management) Limited | Households | 2010 |
| S 9 Limited | Professional & scientific | 2003 |
| S a Builders and Construction Ltd | Construction | 2021 |
| S a C Marketing Limited | Wholesale & retail | 2002 |
| S a Properties (Midlands) Limited | Real estate | 2025 |
| S and I Legacy Estates Ltd | Real estate | 2026 |
| S and J Webster Limited | Agriculture & fishing | 2008 |
| S B Safety Services Limited | Professional & scientific | 2024 |
| S B U Transport Ltd | Transport & logistics | 2025 |
| S Best Lodge Limited | Administrative & support | 2016 |
| S Chungh Limited | Professional & scientific | 2020 |
| S Cole & Co Ltd | Construction | 2008 |
| S D Mortgage & Protection Ltd | Financial services | 2022 |
| S E Electrical & Automation Limited | Construction | 2025 |
| S Elliott Properties (EM) Ltd | Real estate | 2026 |
| S G B Photography Limited | Professional & scientific | 2003 |
| S G Stanton & SON Building Limited | Construction | 2006 |
| S Gray Repairs Limited | Wholesale & retail | 2023 |
| S H Trees Ltd | Agriculture & fishing | 2024 |
| S H WIZ Cleaning Limited | Administrative & support | 2025 |
| S J Booth Property Limited | Real estate | 2020 |