| Roughwood Investments Limited | Real estate | 2018 |
| Roundwell Norwich Limited | Wholesale & retail | 2010 |
| Route 108 Ltd | Wholesale & retail | 2025 |
| Route 77 Ltd | Information & communication | 2020 |
| Roveria Ltd | Construction | 2009 |
| Rowl-Wilks Ventures Limited | Other services | 2020 |
| Rowlands Property Holdings Limited | Financial services | 2021 |
| Roxeth Mead (Buckholt) Ltd. | Education | 1991 |
| ROY Davis Carpentry Limited | Other services | 2013 |
| Royal Oak Ilminster Ltd | Hospitality | 2016 |
| Royale Stitch Ltd | Manufacturing | 2023 |
| Royel Management Limited | Households | 2025 |
| RP Legal Solutions Ltd | Administrative & support | 2025 |
| RP Rail Services Ltd | Construction | 2023 |
| RPM Marketing Limited | Information & communication | 2021 |
| RPS Investment Holding Ltd | Real estate | 2026 |
| Rpts Ventures Limited | Professional & scientific | 2022 |
| RPY Technology Services Ltd | Information & communication | 2017 |
| RR Acquisitions Limited | Construction | 2022 |
| RR Sustainability Services (UK) Limited | Professional & scientific | 2024 |
| RRA Investments Ltd | Real estate | 2022 |
| Rros Ltd | Health & social care | 2010 |
| Rrusstech Limited | Professional & scientific | 2019 |
| RS Chaggar Limited | Administrative & support | 2020 |
| RSA Building and Maintenance Limited | Construction | 2019 |
| RSI Medical Ltd | Health & social care | 2019 |
| RSJ Legal Limited | Professional & scientific | 2023 |
| RSK Property Co. Limited | Real estate | 2017 |
| RSP Catering Ltd | Hospitality | 2024 |
| Rss&Co Services Ltd | Health & social care | 2019 |
| RSU Legal Limited | Professional & scientific | 2024 |
| RSV Control Limited | Other services | 2024 |
| RSV One Properties Limited | Real estate | 2017 |
| Ruben's Quality Construction Ltd | Extraterritorial | 2015 |
| Ruby PIE Ltd | Administrative & support | 2025 |
| Ruby Red Interiors Limited | Professional & scientific | 2007 |
| Ruchi Kitchens Ltd | Hospitality | 2026 |
| Rudhraya Ltd | Health & social care | 2026 |
| Rudra Healthcare Ltd | Health & social care | 2021 |
| Ruislip Park Stables LLP | | 2023 |
| Rumble Tumble Harrow Limited | Arts & recreation | 2014 |
| Rumish Investments Limited | Real estate | 2018 |
| Rumours Label Limited | Wholesale & retail | 2025 |
| Runnersworld Limited | Wholesale & retail | 2014 |
| Rupa Estates Limited | Construction | 2005 |
| Rural Residence Limited | Real estate | 2018 |
| Russell Strategy Partners Ltd | Professional & scientific | 2022 |
| Rusty Barn Living Ltd | Wholesale & retail | 2025 |
| Ruuvand Limited | Professional & scientific | 2006 |
| RV Car Hire Limited | Administrative & support | 2023 |
| Rvive Physio Ltd | Health & social care | 2026 |
| Ryde Racing Limited | Arts & recreation | 2001 |
| Ryke Laundry Ltd | Other services | 2023 |
| Rylex Investments Limited | Real estate | 2001 |
| Rypt Limited | Arts & recreation | 2018 |
| S & C Taylor Properties Limited | Real estate | 2020 |
| S & P Financial Management Limited | Financial services | 2003 |
| S & PJ Holdings Limited | Real estate | 2017 |
| S & S Convenience Stores Limited | Wholesale & retail | 2012 |
| S & S Properties (South Yorkshire) Limited | Real estate | 2012 |
| S & S Trading Services Limited | Wholesale & retail | 2025 |
| S a Hindocha Limited | Professional & scientific | 2014 |
| S C Estate Management Services Limited | Real estate | 2010 |
| S D Investments (GB) Limited | Real estate | 2010 |
| S Dhir Group Limited | Real estate | 2020 |
| S Dhir Investments Ltd | Financial services | 2020 |
| S Dhir Properties Group Limited | Real estate | 2019 |
| S E J Barteckie Ltd | Construction | 2022 |
| S H Dresner Limited | Information & communication | 1991 |
| S J Car Valeters Ltd | Administrative & support | 2025 |
| S J Used Cars Limited | Wholesale & retail | 2021 |
| S Patel Medical Services Ltd | Health & social care | 2024 |
| S S International Inc Limited | Wholesale & retail | 2020 |
| S S Vision Enterprises Limited | Health & social care | 2026 |
| S&D Malde Property Ltd | Real estate | 2019 |
| S&H Logistics Ltd | Wholesale & retail | 2021 |
| S&J Flaherty Properties Limited | Real estate | 2020 |
| S&N House of Creation Ltd | Manufacturing | 2024 |
| S&S Capital Partners Limited | Real estate | 2016 |
| S-Squared Capital Ltd | Financial services | 2025 |
| S.E Mechanical Ltd | Construction | 2019 |
| S.M.13 Limited | Other services | 2013 |
| S.S Property Investments PVT Limited | Real estate | 2025 |
| S.T. Saunders & Sons Limited | Construction | 1959 |
| Sa&Sk Consultancy Limited | Professional & scientific | 2023 |
| Saair Ltd | Hospitality | 2013 |
| Saakshi Ltd | Real estate | 2023 |
| Saan Living Limited | Real estate | 2026 |
| Saan Partners Ltd | Information & communication | 2026 |
| Saas Accountants Ltd | Professional & scientific | 2014 |
| Saas Investment Group Ltd | Real estate | 2026 |
| SAB Medical Services Limited | Health & social care | 2024 |
| Sabtera Properties Limited | Real estate | 2023 |
| SAC Estates Limited | Real estate | 2007 |
| Sadekvik Plumbing & Heating Ltd | Construction | 2018 |
| Sadia C. Limited | Arts & recreation | 2020 |
| SAF Publishing & Printing Limited | Wholesale & retail | 1987 |
| Safe Start H&S Consultancy Ltd | Professional & scientific | 2018 |
| Safeguard Intellectual Property Ltd | Financial services | 2025 |
| Saffrons Investment Limited | Real estate | 2023 |