| Puccino’S M&M Ealing Broadway Limited | Hospitality | 2026 |
| PW Ventures Ltd | Other services | 2015 |
| PWJ Consulting Ltd | Information & communication | 2019 |
| Questors Limited(The) | Arts & recreation | 1949 |
| Quid Staffing Ltd | Administrative & support | 2024 |
| R & R Security Services Ltd | Administrative & support | 2013 |
| R&Aw Ltd | Professional & scientific | 2012 |
| Ramella Corporate Consulting Ltd | Professional & scientific | 2022 |
| Ramped Development Ltd | Information & communication | 2022 |
| Ravensale Limited | Professional & scientific | 1980 |
| RC Lifestyle Ltd | Wholesale & retail | 2016 |
| Reciprocal Solutions Investco LLP | | 2023 |
| Reformedbody Ltd | Arts & recreation | 2024 |
| Reit Limited | Administrative & support | 2006 |
| Reliable Clutch Consulting Ltd | Information & communication | 2024 |
| Renvera Limited | Information & communication | 2023 |
| Retail & Wholesale Stores (UK) Ltd | Wholesale & retail | 2015 |
| Revivere Limited | Other services | 2023 |
| Rising 2021 Ltd | Hospitality | 2021 |
| RK Painting and Decorating Limited | Construction | 2020 |
| Rolfe East ( Letting and Management ) Ltd. | Real estate | 2006 |
| ROY Security Services Ltd | Information & communication | 2020 |
| RRJ Healthcare Ltd | Health & social care | 2024 |
| RS Superstore London Ltd | Wholesale & retail | 2011 |
| Rumiroots Ltd | Households | 2024 |
| Rupi Sambhi Limited | Other services | 2016 |
| RZ Ideas Ltd | Administrative & support | 2020 |
| S E Lifestyle Ltd | Other services | 2020 |
| S Thakkar Limited | Health & social care | 2019 |
| S.K & I Chadha Partnership Ltd | Real estate | 2019 |
| Sacha Page Limited | Wholesale & retail | 2022 |
| Safe Haven Childcare Services Ltd | Health & social care | 2026 |
| Said Zamani Ltd | Financial services | 2010 |
| Saineolas Ltd | Information & communication | 2006 |
| Samvis Group Limited | Real estate | 2018 |
| Sanaullah Courier and Business Consultant Ltd | Transport & logistics | 2023 |
| Sandhurst Inns Ltd | Real estate | 2025 |
| Sareni Ltd | Information & communication | 2022 |
| Sargeants London Lettings Ltd | Real estate | 2014 |
| Sargeants London Limited | Real estate | 2014 |
| Savvy Crowd Limited | Real estate | 2020 |
| SBZ Concierge Ltd | Transport & logistics | 2025 |
| Scandal Water Ltd | Hospitality | 2018 |
| Seamoor House Ltd | Hospitality | 2015 |
| Search Response Agency Limited | Professional & scientific | 2003 |
| Sediq's Tailoring and Alteration Ltd | Manufacturing | 2024 |
| Selmere Ltd | Other services | 2026 |
| Senan Dental Associates Ltd | Health & social care | 2026 |
| Sentosa New Limited | Professional & scientific | 2003 |
| SEY Holdings Ltd | Financial services | 2025 |
| SGR Electrical Limited | Construction | 2014 |
| Shanakee Limited | Hospitality | 2002 |
| Shashikali Ltd | Hospitality | 2023 |
| Sherbet Beauty Ltd | Other services | 2022 |
| Shivonet Limited | Information & communication | 2011 |
| Shree Samruddhi Ltd | Construction | 2026 |
| Silver Bullet Business Services Ltd | Financial services | 2009 |
| SIX Seven Madeley Road Ealing RTM Company Limited | Households | 2009 |
| SIXTEEN16 Limited | Professional & scientific | 2022 |
| Slate Lebanese Ltd | Hospitality | 2025 |
| Sloan Services Group Ltd | Information & communication | 2020 |
| SOL Electronics Limited | Wholesale & retail | 2001 |
| Solace Projects Investco LLP | | 2025 |
| Solarfly Ltd | Professional & scientific | 2015 |
| Solaris Facade Ltd | Water & waste | 2025 |
| Somsec Security Ltd | Administrative & support | 2021 |
| Sornai Music Ltd | Education | 2018 |
| Sparkle Collections Ltd | Information & communication | 2024 |
| Sparvale Residential Company Limited | Real estate | 1989 |
| Sprigsound Limited | Households | 1980 |
| Spud U Like Ltd | Hospitality | 2026 |
| SSK Bantry Limited | Real estate | 2018 |
| SSV Property Group Ltd | Other services | 2023 |
| Stay & Vacay Ltd | Information & communication | 2024 |
| Stonehewer Limited | Water & waste | 2013 |
| Stones and Yaar Ltd | Wholesale & retail | 2025 |
| Stratton Land Investco LLP | | 2023 |
| Stratus Tech Solutions Limited | Information & communication | 2024 |
| Studypro International Ltd | Education | 2023 |
| Submission Grappling Club Ltd | Education | 2022 |
| Sultan London Ltd | Wholesale & retail | 2022 |
| Sun Natural Ltd | Manufacturing | 2021 |
| Supernova Creative Media Ltd | Professional & scientific | 2026 |
| Swami Mauli Ltd | Hospitality | 2022 |
| T R a Pasta Ltd | Wholesale & retail | 2011 |
| T&L Lifestyle Ltd | Professional & scientific | 2020 |
| Tailor Care Ltd | Administrative & support | 2023 |
| Tajikistan International Airlines Ltd | | 1995 |
| Tandae Ltd | Wholesale & retail | 2024 |
| Targonn Limited | Wholesale & retail | 2019 |
| Taxo Bioscience Ltd | Professional & scientific | 2023 |
| Termhouse (Laurel House) Management Limited | Households | 1976 |
| THE 14 Green Company Ltd | Professional & scientific | 2012 |
| THE Berkeley Tree Company Limited | Agriculture & fishing | 2021 |
| THE Best of Bordeaux Limited | Wholesale & retail | 2005 |
| THE Best of Burgundy Limited | Wholesale & retail | 2005 |
| THE Best of Switzerland Limited | Administrative & support | 1996 |
| THE Circle of MEN Ltd | Health & social care | 2024 |
| THE Clean Tea Company Ltd | Hospitality | 2015 |
| THE Daily Brew Limited | Wholesale & retail | 2014 |