| RRG Digital Services Limited | Information & communication | 2019 |
| RRK Decor Ltd | Transport & logistics | 2024 |
| RS &G Limited | Real estate | 2023 |
| RS Blackfriars Limited | Financial services | 2020 |
| RS Building Contractors Ltd | Construction | 2012 |
| RS Josan Constructions Ltd | Construction | 2016 |
| RS Mash Properties Ltd | Real estate | 2024 |
| RS One Stop Ltd | Wholesale & retail | 2025 |
| RS Properties Developments Limited | Construction | 2024 |
| RSA Autoparts Ltd | Wholesale & retail | 2025 |
| RSA Equity Ltd | Real estate | 2022 |
| RSA Events Limited | Wholesale & retail | 2024 |
| RSB Trading Ltd. | Wholesale & retail | 2021 |
| RSG Professional Services LLP | | 2024 |
| RSG Security Limited | Administrative & support | 2026 |
| RSG Transport Ltd | Transport & logistics | 2019 |
| RSH Builders Ltd | Construction | 2021 |
| RSK Healthcare Ltd | Health & social care | 2023 |
| RSK Houses Ltd | Real estate | 2018 |
| RSL Convenience Store Ltd | Wholesale & retail | 2026 |
| RSL Estates London Ltd | Real estate | 2025 |
| RSR Estates Limited | Real estate | 2020 |
| Rsrr Ltd | Health & social care | 2022 |
| RSS & JS Properties Ltd | Real estate | 2025 |
| Rsvonline Limited | Wholesale & retail | 2025 |
| RT Hauliage Ltd | Construction | 2022 |
| RT Realty Ltd | Real estate | 2025 |
| RTA Enterprise Ltd | Construction | 2019 |
| RTA Marketing Ltd | Transport & logistics | 2018 |
| Rtcompany Ltd | Wholesale & retail | 2025 |
| RTR Logistics Ltd | Other services | 2015 |
| Rubilith Ltd | Wholesale & retail | 2024 |
| Ruby Fasteners Ltd | Manufacturing | 2021 |
| Rudd Engineering Limited | Construction | 1970 |
| Rudra Flooring Ltd | Construction | 2025 |
| RUG LUX Ltd. | Wholesale & retail | 2016 |
| Rugs City Ltd | Wholesale & retail | 2020 |
| RUH Property Services Ltd | Real estate | 2020 |
| Ruian City Yangyu Motor Vehicle Parts Co., Ltd | Manufacturing | 2024 |
| RUM HAM Holdings Ltd | Real estate | 2023 |
| Runnymede Corp Limited | Real estate | 2011 |
| Runway Links Ltd | Water & waste | 2024 |
| Rupal Ltd | Transport & logistics | 2016 |
| Rupek Limited | Wholesale & retail | 1995 |
| RUS Razi's Ltd | Information & communication | 2024 |
| Rush Investments Limited | Real estate | 2004 |
| Rushton Ricard LLP | | 2020 |
| Russ Eaton Engineering Limited | Professional & scientific | 2018 |
| Russian London Limited | Professional & scientific | 1999 |
| Russy Rigging Ltd | Construction | 2025 |
| RV Design & Build Ltd | Construction | 2026 |
| RV Estates Limited | Real estate | 2026 |
| RV Mgmt Ltd | Information & communication | 2023 |
| RV Property Consultancy Ltd | Real estate | 2023 |
| RVP Property Limited | Real estate | 2024 |
| Ryan Foods Limited | Hospitality | 2020 |
| Ryanwilliamudeni Limited | Real estate | 2025 |
| Rygul Ltd | Hospitality | 2026 |
| RYK Associates Limited | Professional & scientific | 2013 |
| RYS Estates Ltd | Real estate | 2024 |
| Ryse Marketplace UK Limited | Wholesale & retail | 2026 |
| Rzvkutaba Ltd | Transport & logistics | 2024 |
| S S Roofing Specialist Limited | Construction | 2026 |
| S & M Singh Ltd | Real estate | 2020 |
| S B Chohan Roofing Ltd | Construction | 2025 |
| S B Decorating Ltd | Construction | 2021 |
| S Build Construction Service UK Ltd. | Construction | 2017 |
| S Chopra & Sons Ltd | Transport & logistics | 2018 |
| S Concrete Power Finisher Ltd | Construction | 2025 |
| S Dhaliwal Limited | Real estate | 2025 |
| S Forster Electrical Ltd | Construction | 2017 |
| S G Gill Limited | Wholesale & retail | 2018 |
| S G Property Services Limited | Construction | 2006 |
| S Kalra Limited | Wholesale & retail | 2026 |
| S Karki Ltd | Public administration | 2022 |
| S Line Haulage Ltd | Transport & logistics | 2024 |
| S Qureshi Homes Ltd | Real estate | 2019 |
| S Recruit Limited | Information & communication | 2024 |
| S S Alpha Construction Ltd | Construction | 2015 |
| S S Badhan Haulage Limited | Transport & logistics | 2017 |
| S S Construction & Electricals Ltd | Construction | 2019 |
| S S Corporation Ltd | Construction | 2017 |
| S S H Enterprises Ltd | Financial services | 2020 |
| S S K Courierss Limited | Transport & logistics | 2023 |
| S S Logistics London Ltd | Transport & logistics | 2024 |
| S S T Construction (UK) Ltd | Construction | 2017 |
| S Sidhu Construction Ltd | Construction | 2025 |
| S Waraich Construction Ltd | Construction | 2025 |
| S&A Ghai Trading Ltd | Real estate | 2022 |
| S&H Professionals Ltd | Professional & scientific | 2020 |
| S&M Entertainment Ltd | Information & communication | 2025 |
| S&Nk Limited | Health & social care | 2017 |
| S&R Builders Limited | Construction | 2026 |
| S&S Grover Ltd | Real estate | 2026 |
| S&S Trading and Industrial Group Ltd | Manufacturing | 2025 |
| S. Bhabra Properties Limited | Real estate | 2017 |
| S.A. Sterling Estates Limited | Extraterritorial | 2008 |
| S.Alam Optical Services Limited | Health & social care | 2010 |
| S.D Consultants Marketing Limited | Information & communication | 2025 |
| S.N Joinery Ltd | Manufacturing | 2018 |