| Ratrace Ltd. | Wholesale & retail | 2003 |
| Ratrace Motorsport Limited | Manufacturing | 1993 |
| Raven Green & Company Limited | Professional & scientific | 1996 |
| RAY Optics Limited | Health & social care | 2014 |
| Raylux Properties Limited | Extraterritorial | 2007 |
| Raynton Consultants Ltd | Professional & scientific | 2012 |
| Rayspeed Ltd | Transport & logistics | 2022 |
| Really Local Group (Blockbuster) Ltd | Hospitality | 2019 |
| Really Local Group (Catford Mews) Ltd | Hospitality | 2018 |
| Really Local Group Limited | Arts & recreation | 2017 |
| Red & White Army Limited | Financial services | 2025 |
| Redemption UN Limited | Administrative & support | 2024 |
| Redl Limited | Extraterritorial | 2014 |
| Reedrent Limited | Real estate | 1994 |
| Regional Contracts Ltd | Other services | 2024 |
| Rehab Salon Limited | Other services | 2017 |
| Rehana Supermarket Ltd | Wholesale & retail | 2025 |
| Reker Imports Limited | | 1977 |
| Rent for Holiday Ltd | Administrative & support | 2013 |
| Revelprime Limited | Real estate | 1994 |
| RG21 Investments Limited | Financial services | 2021 |
| RG22 Holdings Limited | Financial services | 2022 |
| RHC Property Limited | Real estate | 2024 |
| Richard Howard Ingleby Limited | Extraterritorial | 2025 |
| Rigal Holdings Ltd | Financial services | 2023 |
| Ringrose Investments Limited | Financial services | 2025 |
| Roland Community Care Limited | Health & social care | 2011 |
| Romun Solutions Limited | Hospitality | 2015 |
| Rooms for Cows Limited | Hospitality | 2019 |
| Roundpoll Insurance Services Ltd | Real estate | 2004 |
| RS Freeholds Ltd | Administrative & support | 2017 |
| RSN Holdings Limited | Real estate | 2019 |
| Rsnr Limited | Real estate | 2026 |
| Ruby Dares Ltd | Manufacturing | 2016 |
| Ryan Topsoil Ltd | Construction | 2010 |
| S B Consultancy Services London Ltd | Professional & scientific | 2026 |
| S M J Consultants Limited | Administrative & support | 2006 |
| S&K Land and Investments Limited | Real estate | 2019 |
| Safin Ltd | Financial services | 2001 |
| Saskey Limited | Information & communication | 2020 |
| Sattauk Ltd | Information & communication | 2015 |
| Save UR Music Ltd | Information & communication | 2011 |
| SB Freehold Management Ltd | Real estate | 2020 |
| Schematiq Limited | Information & communication | 2010 |
| Scipro Management Ltd | Professional & scientific | 2017 |
| Scorpio Analysis Limited | Extraterritorial | 1998 |
| Sdpsych Consulting Limited | Health & social care | 2024 |
| SE17 Ltd | Real estate | 2015 |
| Sea Change Capital Limited | Real estate | 2014 |
| Send Transfers Ltd | Transport & logistics | 2024 |
| Sendscript Limited | Administrative & support | 2014 |
| Sesame Digital Limited | Information & communication | 2023 |
| SET Essentials Asset Limited | Administrative & support | 2023 |
| SET Essentials Ltd | Information & communication | 2022 |
| Shanghai House Oriental Limited | Hospitality | 2019 |
| Shiraz Patisserie Ltd | Manufacturing | 2021 |
| Shiv Express Ltd | Wholesale & retail | 2025 |
| Shiv Kitchen Ltd | Hospitality | 2025 |
| Shoreditch Land Limited | Real estate | 2018 |
| Shucraft Limited | Professional & scientific | 2016 |
| Sigmund Pulsometer Pumps Limited | Manufacturing | 2013 |
| Silo Property Ltd | Financial services | 2020 |
| SIP Consult Ltd | Professional & scientific | 2012 |
| Siteworks Connect Limited | Construction | 2023 |
| SK County Properties Limited | Real estate | 2021 |
| Sloe-Eyed Productions Ltd | Administrative & support | 2009 |
| SM Mechanical Limited | Wholesale & retail | 2015 |
| Smart Trade Living Limited | Other services | 2025 |
| Social Saver Limited | Professional & scientific | 2019 |
| Solemat Limited | Wholesale & retail | 2016 |
| Solgate Services Limited | Administrative & support | 2001 |
| SPC (Sheridan Property Consultants) Limited | Construction | 1998 |
| Spicy Ramen Limited | Professional & scientific | 2019 |
| Spintime LLP | | 2005 |
| Spira Limited | | 2013 |
| Sport Shotz Ltd | Information & communication | 2017 |
| Stamford Brook Mews Limited | Construction | 2024 |
| Steel Rope Access Ltd | Professional & scientific | 2019 |
| Sterling & Hawthorne Ltd | Wholesale & retail | 2016 |
| Sterlings Ltd | Professional & scientific | 1978 |
| Stewtech Limited | Information & communication | 2015 |
| Stormway Enterprises Limited | Administrative & support | 1998 |
| Strasys Holdings Limited | Financial services | 2022 |
| Strasys Limited | Professional & scientific | 2015 |
| Stratis Homes (North London) Limited | Construction | 2022 |
| Stratis Homes Limited | Real estate | 2015 |
| Stratis Land Limited | Financial services | 2018 |
| Streamline Computers Limited | Information & communication | 2008 |
| Stuart Court (Freeholds) Limited | Real estate | 1996 |
| Superbuild Builders Merchants Limited | Wholesale & retail | 2024 |
| Surprise Caterers Limited | Hospitality | 2019 |
| Sutdol Group Ltd. | Financial services | 2021 |
| Suzanne Goodband Board Solutions Limited | Professional & scientific | 2010 |
| Suzanne Goodband Interim Solutions Limited | Professional & scientific | 2010 |
| Swanvista Limited | Real estate | 1994 |
| Sweet Friday Limited | Wholesale & retail | 2019 |
| Synergy Selection Limited | Administrative & support | 2001 |
| T Cribb & Sons ( Rivetts ) Ltd | Other services | 2012 |
| T I M S G Limited | Real estate | 1997 |
| T R B Owles Limited | Wholesale & retail | 2014 |