| Roger IT Consulting Limited | Information & communication | 2015 |
| Rogers Finance Ltd | Professional & scientific | 2007 |
| Rohax Trading Ltd | Wholesale & retail | 2025 |
| Roller UK Limited | Construction | 2018 |
| Rome Limited | Other services | 2023 |
| Romeo & Juliet Upholstery Ltd | Manufacturing | 2012 |
| Romney Data Services LLP | | 2018 |
| Ronn Property Investments Ltd | Real estate | 2023 |
| Rooms HQ Limited | Real estate | 2015 |
| Roosters Grill Morden Ltd | Hospitality | 2019 |
| Roosters Spot Vauxhall Limited | Hospitality | 2021 |
| Rootwall.Ai Ltd | Information & communication | 2020 |
| Ropro Healthcare Ltd | Health & social care | 2024 |
| Rosavanam Estates Ltd | Real estate | 2022 |
| Rosca Facilities Management Ltd | Administrative & support | 2023 |
| Rose Bottle Ltd | Wholesale & retail | 2024 |
| Rose Life Ltd | Real estate | 2025 |
| Rosehill Cricket Academy Ltd | Arts & recreation | 2022 |
| Rosewell Properties Limited | Real estate | 1994 |
| Rosewell Roofing Ltd | Construction | 2008 |
| Roshan Sons Builders Ltd | Construction | 2021 |
| Roshn Group Ltd | Professional & scientific | 2025 |
| Rosi Legal Limited | Professional & scientific | 2023 |
| Rosietay Limited | Health & social care | 2016 |
| Rosy LEA Cafe Limited | Hospitality | 2021 |
| Rotating Equipment Spares International Ltd. | Wholesale & retail | 2022 |
| Rougemont Electrical & Building Maintenance Ltd | Construction | 2013 |
| Rougemont Group Ltd | Real estate | 2022 |
| Routes Overseas Consultants Ltd | Professional & scientific | 2024 |
| Roxp Transport Ltd | Transport & logistics | 2025 |
| Roxy Trends Ltd | Construction | 2011 |
| RR Dreams Construction Ltd | Real estate | 2024 |
| RR Holds Limited | Financial services | 2024 |
| RRM Consulting Ltd | Information & communication | 2018 |
| RRR Property Investments Limited | Real estate | 2024 |
| RRR2016 Trading Limited | Transport & logistics | 2016 |
| Rrrb Trading Ltd | Transport & logistics | 2025 |
| RS Construction and Building Limited | Other services | 2017 |
| RS Estates Agents Ltd | Real estate | 2019 |
| RS Protrans Ltd | Water & waste | 2021 |
| RS Retail Group Ltd | Wholesale & retail | 2025 |
| Rsab Consultant Ltd. | Information & communication | 2024 |
| RSP Star Ltd | Transport & logistics | 2025 |
| Rubani Healthcare Limited | Health & social care | 2013 |
| Rubin Ltd | Construction | 2026 |
| Ruby Designs Clothing Ltd | Wholesale & retail | 2023 |
| Rudra SOL Ltd | Information & communication | 2025 |
| Rugen Projects Limited | Real estate | 2021 |
| Rukh Trading Ltd | Transport & logistics | 2021 |
| Rukun Almarafa General Trading Limited | Wholesale & retail | 2024 |
| Rumanza Group Ltd | Information & communication | 2024 |
| Rush Hour Minicabs Ltd | Transport & logistics | 2016 |
| Rush Republic Ltd | Other services | 2013 |
| Rusko Care Consultancy Ltd | Health & social care | 2022 |
| Rusko Holding Ltd | Financial services | 2024 |
| Rusko Investment Properties Ltd | Real estate | 2022 |
| Rvehub Ltd | Wholesale & retail | 2025 |
| RW Medical Services Ltd | Health & social care | 2012 |
| Rwoodcreative Ltd | Wholesale & retail | 2025 |
| RWW Distribution Ltd. | Wholesale & retail | 2018 |
| RYB Estates Ltd | Households | 2025 |
| RYE06 Ltd | Other services | 2010 |
| RYK2UK Ltd | Wholesale & retail | 2020 |
| Ryver Partnership Limited | Professional & scientific | 2023 |
| RZ Builders 1 Ltd | Construction | 2014 |
| RZA Chauffeurs Limited | Transport & logistics | 2019 |
| S a JAY Ltd | Transport & logistics | 2024 |
| S C Promotions Ltd | Arts & recreation | 2024 |
| S D Properties & Services Ltd | Real estate | 2025 |
| S K Syeed Anaesthesia Limited | Health & social care | 2013 |
| S Kalwar Trading Ltd | Transport & logistics | 2024 |
| S Talent Ltd | Administrative & support | 2026 |
| S&P Construction Ltd | Construction | 2026 |
| S&S Builders Trading Ltd | Construction | 2018 |
| S&S Seller Ltd | Wholesale & retail | 2024 |
| S&S Traders Ltd | Wholesale & retail | 2016 |
| S&Y London Limited | Construction | 2023 |
| S. Early Motor Company Ltd | Wholesale & retail | 2015 |
| S. K. Pande Limited | Health & social care | 2003 |
| S.R of N.E. Limited | Transport & logistics | 2013 |
| S4 UK Trading Ltd | Health & social care | 2018 |
| SA International Designers Ltd | Hospitality | 2018 |
| SA Medico Limited | Health & social care | 2013 |
| Saad Trading Ltd | Transport & logistics | 2025 |
| Saams Function Hall Limited | Health & social care | 2015 |
| Saan Trading Ltd | Transport & logistics | 2018 |
| SAB Building Maintenance Ltd | Construction | 2024 |
| SAB Holds Ltd | Financial services | 2024 |
| Sabahatimpex Limited | Administrative & support | 2025 |
| Sabil Trading Ltd | Hospitality | 2019 |
| Sabir Enterprises Ltd | Professional & scientific | 2025 |
| Sacha Lejeune Hair Ltd | Other services | 2015 |
| Saebas Ltd | Information & communication | 2016 |
| SAF Trading Ltd | Construction | 2021 |
| Safeguard Self Storage Ltd | Transport & logistics | 2015 |
| Safesparx Electrical Ltd | Construction | 2013 |
| Sahar Ltd | Transport & logistics | 2025 |
| Sahni Holds Ltd | Financial services | 2026 |
| Sahni Investment Property Ltd | Real estate | 2026 |
| Sahni Professional Services Ltd | Health & social care | 2026 |