| Riva Events Ltd | Hospitality | 2024 |
| Rivaa Diamond UK Ltd | Wholesale & retail | 2019 |
| Riverbed (UK) Limited | Professional & scientific | 1997 |
| Riverstone Corporation Ltd | Wholesale & retail | 2001 |
| Riverview Recruitment Ltd | Administrative & support | 2018 |
| Riya & Siya Limited | Financial services | 2017 |
| Riya Tech Solutions Ltd | Information & communication | 2009 |
| Rjhl Tech Ltd | Wholesale & retail | 2025 |
| RJS Electrical (Surrey) Ltd | Construction | 2020 |
| RJS Wealth Limited | Administrative & support | 2016 |
| RK Realty Ventures Ltd | Construction | 2025 |
| RK Vision Limited | Construction | 2014 |
| Rkns Properties Limited | Real estate | 2013 |
| Rlea Limited | Real estate | 2025 |
| RM Property Managment Limited | Real estate | 2006 |
| Rmcp Investments Ltd | Real estate | 2016 |
| RNA Property Ltd | Real estate | 2024 |
| RND Exterior Cleaning Ltd | Administrative & support | 2025 |
| RO Recovery Ltd | Wholesale & retail | 2024 |
| Roach & Partners Holdings Ltd | Financial services | 2017 |
| Robin Hedge Properties Ltd | Real estate | 2021 |
| Robin Savage Photography Ltd | Professional & scientific | 2018 |
| Robo Galactic Ltd | Information & communication | 2021 |
| Rocarmax Investments Limited | Professional & scientific | 2012 |
| Roccarriett Investments Limited | Professional & scientific | 2024 |
| Rocky's Pressure Co. Ltd | Administrative & support | 2025 |
| Rogers Heating Services Limited | Construction | 2020 |
| Rogerson Roofing Ltd | Construction | 2026 |
| ROI Asset Management Ltd | Financial services | 2021 |
| Rolaj Foundation International Ltd | Education | 2013 |
| Romroom Ltd | Wholesale & retail | 2024 |
| Roof Care Solutions Limited | Construction | 2015 |
| Roofxperts Ltd | Construction | 2021 |
| Room Mates Ltd | Households | 2024 |
| Rose & Fern Wealth Management Limited | Administrative & support | 2025 |
| Rothshire Consultancy Ltd | Information & communication | 2021 |
| Rothshire Recruitment and Interships Limited | Education | 2018 |
| Roundstripes Limited | Other services | 1973 |
| Rowerange Limited | Real estate | 1996 |
| Rowhill Holdings Ltd | Real estate | 2026 |
| Roxby Hair Design Ltd | Other services | 2024 |
| Roxford Scaffolding Limited | Construction | 2017 |
| RP Estates London Ltd | Real estate | 2016 |
| RP Financial Services Ltd | Real estate | 2017 |
| RS Molecular Holdings Limited | Financial services | 2024 |
| RS Supps Ltd | Wholesale & retail | 2026 |
| Rs-It Server Spares Ltd | Wholesale & retail | 2026 |
| RSD Solutions Ltd | Administrative & support | 2022 |
| RSJ Detailing Ltd | Wholesale & retail | 2024 |
| RTJ Investments & Properties Limited | Real estate | 2003 |
| Rtsm Limited | Construction | 2023 |
| Rural Arisings (Cranleigh) Limited | Administrative & support | 2015 |
| Rural Arisings Limited | Administrative & support | 2001 |
| Rural Arisings Trustees Limited | Administrative & support | 2024 |
| Ruseenthra Jewellers Limited | Wholesale & retail | 2019 |
| Rxlive Limited | Administrative & support | 2014 |
| Rymas Developments Limited | Construction | 2007 |
| S & J Trading London Limited | Real estate | 2020 |
| S a Consultancies Limited | Professional & scientific | 2018 |
| S Bennett Limited | Administrative & support | 2005 |
| S C K Electrical Limited | Construction | 2006 |
| S Dillon Plasterwork Ltd | Construction | 2021 |
| S L M Tooting Limited | Professional & scientific | 1947 |
| S L Maintenance Limited | Construction | 2009 |
| S Mughal Ltd | Health & social care | 2014 |
| S N' R (UK) Limited | Professional & scientific | 2011 |
| S P Pharma Holding Ltd | Financial services | 2025 |
| S P Pharma Services Limited | Health & social care | 2018 |
| S Z Building Services Ltd | Construction | 2019 |
| S&S Sparkles Services Ltd | Construction | 2024 |
| S&W Beauty Studio Ltd | Other services | 2026 |
| S-Aero Co., Ltd | Extraterritorial | 2020 |
| S. P. a. Apparel Ltd | Wholesale & retail | 2018 |
| S.E.V.E.R. Accounting Service Ltd | Professional & scientific | 2021 |
| S.J.D Solutions & Co Ltd | Real estate | 2014 |
| S.L. Heating Limited | Wholesale & retail | 2003 |
| Sabari Management 2018 Limited | Professional & scientific | 2017 |
| Sabina Hair & Cosmetics (Tooting) Ltd | Wholesale & retail | 2004 |
| SAD Bats Publishing Ltd | Information & communication | 2013 |
| SAF33 Ltd | Information & communication | 2018 |
| Safepass Fire Doors Ltd | Construction | 2024 |
| Safetypin Ltd | Professional & scientific | 2025 |
| Saffiullah International Ltd | Wholesale & retail | 2025 |
| Saffron Zest Ltd | Hospitality | 2017 |
| Sagacious Accountants Limited | Professional & scientific | 2016 |
| Sage Solutions Limited | Information & communication | 2017 |
| Sahana Enterprise Limited | Hospitality | 2009 |
| Sahaya Limited | Information & communication | 2025 |
| SAI Aksharra Technologies Limited | Information & communication | 2021 |
| Sail Capital Ltd | Extraterritorial | 2021 |
| Saish (UK) Limited | Professional & scientific | 2020 |
| Sakan Restaurant Ltd | Hospitality | 2020 |
| Sakathevan 1980 Ltd | Real estate | 2021 |
| Saler-App Ltd | Information & communication | 2016 |
| Salman & Nayab Ltd | Wholesale & retail | 2020 |
| SAM Personal Training Limited | Arts & recreation | 2023 |
| Samanta Factory Ltd | Wholesale & retail | 2024 |
| Sambreel Community Interest Company | Public administration | 2018 |
| Sambuk Ventures Limited | Transport & logistics | 2019 |
| Samson’S Property Management Limited | Real estate | 2019 |