| Ruela Limited | Real estate | 2024 |
| Ruez Properties Ltd | Real estate | 2024 |
| Rufina Design Limited | Wholesale & retail | 2021 |
| Ruggs Roofing Limited | Construction | 2025 |
| Rule Services and Sons Ltd | Construction | 2019 |
| Run & Go Limited | Construction | 2022 |
| Runneth Limited | Real estate | 2014 |
| Running Lurcher Limited | Administrative & support | 2021 |
| Ruscom-Plus Ltd | Construction | 2023 |
| Rush Green Amateur Boxing Club CIC | Arts & recreation | 2022 |
| Rush Green Laundry & DRY Cleaners Limited | Other services | 2018 |
| Rush Green Limited | Wholesale & retail | 2023 |
| Rush Property Service Limited | Real estate | 2022 |
| Rush Real Estate Ltd | Real estate | 2022 |
| RUSH2SAVINGS Ltd | Wholesale & retail | 2025 |
| Rushdent Limited | Health & social care | 2011 |
| Rushgreen Technicians Limited | Professional & scientific | 2023 |
| Ruskin Motors Ltd | Wholesale & retail | 2025 |
| Russell Court Freehold Management Company Limited | Households | 1997 |
| Russell News Square Limited | Wholesale & retail | 2013 |
| Russell's Kitchen Ltd | Hospitality | 2024 |
| Rustic Tiles UK Limited | Construction | 2016 |
| Ruth Pharma Health Ltd | Professional & scientific | 2016 |
| RV Narad Ltd | Real estate | 2021 |
| Rvsd Ltd | Real estate | 2018 |
| RW Graphic Design Limited | Professional & scientific | 2014 |
| Rwph Ltd | Construction | 2019 |
| RX Consultancy Ltd | Professional & scientific | 2026 |
| RX3 Padel BSE Limited | Arts & recreation | 2025 |
| RX3 Padel Holdings Limited | Arts & recreation | 2026 |
| RXN Construction Ltd | Construction | 2021 |
| RXP Services Limited | Health & social care | 2024 |
| RY Consultancy Ltd | Information & communication | 2021 |
| Ryan KRD Ltd | Wholesale & retail | 2025 |
| Ryan’S Design Ltd | Construction | 2017 |
| Rydence Transport Ltd | Transport & logistics | 2025 |
| RYE Farm Shop Limited | Wholesale & retail | 2025 |
| RYE Premier Stores Limited | Wholesale & retail | 2025 |
| Ryft Europe Ltd | Wholesale & retail | 2023 |
| Ryzone Limited | Transport & logistics | 2020 |
| RZA (London) Limited | Wholesale & retail | 2018 |
| RZR Limited | Construction | 2025 |
| S & a Construction (London) Limited | Construction | 2014 |
| S & G Precision Equipment Limited | Manufacturing | 2008 |
| S & H Ltd | Construction | 2026 |
| S & J Hartley Electrical Ltd | Construction | 2026 |
| S & M Estates Limited | Real estate | 2008 |
| S & Q Scaffolding Ltd | Construction | 2019 |
| S & R Care Limited | Hospitality | 2025 |
| S & S Design & Build Ltd | Construction | 2014 |
| S & S Global Enterprise Ltd | Wholesale & retail | 2024 |
| S & V Carpentry Joinery Ltd | Construction | 2013 |
| S & V Solutions Ltd | Other services | 2016 |
| S a B Logistics Limited | Transport & logistics | 2016 |
| S a Law & Enterprise Ltd | Professional & scientific | 2024 |
| S and a Hairdressing Limited | Other services | 2017 |
| S and a Home and Property Services Ltd | Construction | 2026 |
| S and I Maidstone Ltd | Hospitality | 2021 |
| S B1 Construction Ltd | Construction | 2016 |
| S C G Property Services Ltd | Real estate | 2022 |
| S D Designs (UK) Ltd | Professional & scientific | 2013 |
| S DAX Ltd | Professional & scientific | 2025 |
| S Hazra Ltd | Wholesale & retail | 2024 |
| S J Builders & SON Ltd | Manufacturing | 2024 |
| S J Matthews & SON Limited | Construction | 2006 |
| S K Finance London Limited | Financial services | 2020 |
| S K Leasing & Investment Ltd | Real estate | 2024 |
| S Khan Healthcare Services Ltd | Health & social care | 2021 |
| S Line Services Limited | Energy | 2017 |
| S MAX 3D Design Studio Limited | Construction | 2016 |
| S Morris Consultant Ltd | Administrative & support | 2011 |
| S Nicolae Construct & Logistic Ltd | Construction | 2024 |
| S P Architecture (Spa) Ltd | Professional & scientific | 2025 |
| S P Coaching Ltd | Administrative & support | 2026 |
| S P S Recruitment Limited | Administrative & support | 2009 |
| S Radford Limited | Administrative & support | 2021 |
| S Richardson Group Limited | Professional & scientific | 2015 |
| S S Mutti Builders Limited | Construction | 2025 |
| S Square Accountants Ltd | Professional & scientific | 2007 |
| S T Property Services Limited | Construction | 2011 |
| S T Stone Works Limited | Manufacturing | 2015 |
| S&A Builders London Limited | Construction | 2019 |
| S&A Clinical Services Ltd | Professional & scientific | 2020 |
| S&A Education Limited | Education | 2024 |
| S&D Electrical Engineering Ltd | Construction | 2016 |
| S&D Nelson Solutions Ltd | Information & communication | 2021 |
| S&E Innovative Construction Ltd | Wholesale & retail | 2024 |
| S&F Business Consultancy Ltd | Energy | 2014 |
| S&G (Hertford) Limited | Hospitality | 2019 |
| S&I Carpentry Ltd | Construction | 2019 |
| S&K Financial Services Ltd | Financial services | 2009 |
| S&K Plastering Limited | Construction | 2021 |
| S&L Wellhome Limited | Construction | 2026 |
| S&M Hand Carwash Limited | Other services | 2025 |
| S&M Property Nest Ltd | Real estate | 2025 |
| S&P Lettings & Development Ltd | Real estate | 2023 |
| S&S Fire Ltd | Extraterritorial | 2022 |
| S&S Motor Solution Ltd | Wholesale & retail | 2025 |
| S&S Plastering and Decorating Ltd | Construction | 2025 |
| S&S Tiger Ltd | Professional & scientific | 2022 |