| OHM Properties Management Ltd | Real estate | 2016 |
| Operexx Ltd | Professional & scientific | 2023 |
| Oswaldo Limited | Information & communication | 2019 |
| Oswaldo Publishing Ltd | Other services | 2021 |
| OTG Holdings Limited | Real estate | 2006 |
| Owlgaze UK Limited | Information & communication | 2022 |
| Paardevlei Dentists Ltd | Health & social care | 2014 |
| Pankracy Limited | Health & social care | 2021 |
| Parallel Employee Benefits Limited | Financial services | 2022 |
| Parallel Financial Limited | Financial services | 2000 |
| Paramount Residency Ltd | Real estate | 2019 |
| Pardus Limited | Administrative & support | 2026 |
| Pars Electrical Limited | Construction | 2020 |
| Patrick Ward Consulting Limited | Professional & scientific | 2017 |
| Paymek Consulting Ltd | Professional & scientific | 2016 |
| PC Lifeline Ltd | Information & communication | 2013 |
| Phoenix FX Limited | Financial services | 2017 |
| PHYSIO4LIFE Limited | Health & social care | 2003 |
| Pied a Terre (SG) Ltd | Real estate | 2024 |
| Pitchup.Com Ltd | Administrative & support | 2008 |
| Pitman and Company Consulting Ltd. | Professional & scientific | 2006 |
| Plan a Holdings Limited | Financial services | 2025 |
| PPP Ventures Ltd | Real estate | 2025 |
| Princeton Court Management Limited | Real estate | 1996 |
| Property Raptor UK Limited | Information & communication | 2022 |
| Putney Bidco Limited | Other services | 2016 |
| Putneyred Ltd | Professional & scientific | 2013 |
| Quarterdeck Life Ltd | Administrative & support | 2013 |
| Reba Group Ltd | Professional & scientific | 2016 |
| Redmman Ltd | Wholesale & retail | 2012 |
| Refido Ltd | Information & communication | 2012 |
| Regallis Limited | Real estate | 1998 |
| Remembering Wildlife Ltd | Information & communication | 2018 |
| RFO Medical Ltd | Wholesale & retail | 2010 |
| Richard Mallett Arts Management Ltd | Education | 2012 |
| Rigby Grass and Tree Care Ltd | Administrative & support | 2018 |
| Ripped Limited | Administrative & support | 2011 |
| Rouleur Marketing Ltd | Professional & scientific | 2018 |
| Ruthbridge Limited | Administrative & support | 1994 |
| Rutland Montpelier Company Limited | Households | 1963 |
| Sargent Consulting Ltd | Information & communication | 2013 |
| Sarsen Broadcast Ltd | Information & communication | 2009 |
| Selfless | Health & social care | 2011 |
| Shivram London Limited | Real estate | 2017 |
| SKI Holidays Limited | Administrative & support | 2008 |
| Sling Assist Limited | Construction | 2019 |
| Smarter Homes London Limited | Real estate | 2016 |
| Solutions 2 (London) Ltd. | Professional & scientific | 2012 |
| Sophiewb Consulting Limited | Information & communication | 2012 |
| Southbridge Developments Ltd | Real estate | 2015 |
| Specrim Ltd | Administrative & support | 2012 |
| SPG Consulting Limited | Professional & scientific | 2004 |
| Spot-On Electrical and Building Contractors Limited | Construction | 2018 |
| ST Mary's Parish Trust | Health & social care | 2004 |
| Stark Property Enterprises Limited | Administrative & support | 2013 |
| Stratforma Consulting Ltd | Professional & scientific | 2014 |
| Student Information Systems International Ltd | Information & communication | 2024 |
| Superfastfpga Ltd | Information & communication | 2019 |
| Swiss Cottage Boutique Restaurant Limited | Hospitality | 2016 |
| Symbion Limited | Information & communication | 1981 |
| Tagattach Renewable Solutions Limited | Construction | 2019 |
| Tash Grill Ltd | Hospitality | 2021 |
| Telos International Consulting Limited | Professional & scientific | 2020 |
| TGM Facades UK Limited | Construction | 2014 |
| THE 49 Russell Street Management Company Limited | Households | 2002 |
| THE Carpet Studio Putney Limited | Wholesale & retail | 2024 |
| THE Claims Consultancy (London) Limited | Financial services | 2004 |
| THE Exhibitions Agency Limited | Arts & recreation | 2009 |
| THE Gordon Murray Foundation | Education | 2023 |
| THE Growing Children Ltd | Health & social care | 2015 |
| THE Invisible Solution Limited | Administrative & support | 2004 |
| THE Lewin Trust Company Limited | Financial services | 2025 |
| THE Putney GIN Company Limited | Professional & scientific | 2005 |
| THE Pyramid Angle Limited | Information & communication | 1988 |
| THE SKI Week Ltd | Administrative & support | 2014 |
| THE ST. Alban Press Ltd | Information & communication | 2015 |
| THE Villas Pentlow Street Road Management Limited | Households | 2004 |
| Thursday Limited | Professional & scientific | 2011 |
| Tideway Capital Limited | Professional & scientific | 2014 |
| Tileman and Company,Limited | | 1915 |
| Timeous Limited | Manufacturing | 2012 |
| TJ5 Consultancy Limited | Professional & scientific | 2012 |
| Tornado Group Limited | Professional & scientific | 2004 |
| Total Onboarder Ltd | Information & communication | 2024 |
| Trendfx Ltd | Information & communication | 2014 |
| Tulip Consultants Ltd | Professional & scientific | 2011 |
| Turner Tree Care Limited | Administrative & support | 2012 |
| TW10 Architects Ltd | Professional & scientific | 2015 |
| UN Architects Limited | Professional & scientific | 2009 |
| UNO Ventures Ltd | Other services | 2017 |
| Uutensil Ltd | Wholesale & retail | 2009 |
| Valuz LLP | | 2020 |
| Vector Racing Limited | Arts & recreation | 2020 |
| Ventoux Sports Ltd | Wholesale & retail | 2017 |
| Viva Electric Ltd | Construction | 2007 |
| Watership Advisors Limited | Professional & scientific | 2023 |
| Wayside Bookkeeping Ltd | Professional & scientific | 2020 |
| Wellsure Property Ltd | Arts & recreation | 2020 |
| Westfield Stratford Property Ltd | Hospitality | 2020 |
| Whiskygenius Limited | Information & communication | 2023 |