| Melinda Property Services Limited | Hospitality | 1988 |
| Melinda Property Trading Limited | Real estate | 2015 |
| Meta IT UK Solutions Limited | Information & communication | 2022 |
| MG South East Properties Ltd | Real estate | 2022 |
| Middlesex Flooring Limited | Construction | 1995 |
| MLT Services Ltd | Professional & scientific | 2020 |
| Nadine Lauschke Ltd | Administrative & support | 2023 |
| Neon Army Limited | Manufacturing | 2022 |
| Nexus Construction Limited | Construction | 2001 |
| Nucleus Clothing Limited | Arts & recreation | 1996 |
| Numerii Accountancy Services Limited | Professional & scientific | 2011 |
| Numerii Limited | Professional & scientific | 2004 |
| Nvdw Onderneming Limited | Real estate | 2020 |
| Oceanteam Logistics Limited | Transport & logistics | 2000 |
| Olivia Gardens Management Ltd | Households | 2025 |
| Osstrack Ltd | Information & communication | 2025 |
| Outcomex Limited | Information & communication | 2025 |
| Outdoor Alves Ltd | Administrative & support | 2024 |
| Overprint Limited | Manufacturing | 1973 |
| P T Property Investment & Developments Limited | Real estate | 2021 |
| Patent Ferret Ltd | Professional & scientific | 2023 |
| Pharmethicals Limited | Wholesale & retail | 2000 |
| Philbec Nurseries Limited | Education | 2016 |
| Piazza DO Northwood Limited | Hospitality | 2018 |
| PIP Squeak Developments Limited | Professional & scientific | 2003 |
| PJ Automotive (Iver) Limited | Wholesale & retail | 2026 |
| PMW Capital Partners Limited | Professional & scientific | 2016 |
| Portal Building Controls Limited | Construction | 2009 |
| Premium Force Limited | Wholesale & retail | 2009 |
| Punter Prizes Ltd | Other services | 2024 |
| Qanvas Studios Ltd | Arts & recreation | 2024 |
| Red Property Maintenance Limited | Construction | 2012 |
| Reilly Civils Limited | Construction | 2007 |
| Revolver Soul Ltd | Other services | 2025 |
| RG Dental Ltd | Health & social care | 2021 |
| Rickmansworth Town Team Community Interest Company | Arts & recreation | 2013 |
| S.D.L Drywall Limited | Construction | 2016 |
| Salamander Cleaners Limited | Administrative & support | 2003 |
| SBL Infotech UK Limited | Information & communication | 2011 |
| Scribes Accountancy Ltd | Professional & scientific | 2009 |
| Semper Productions Ltd | Arts & recreation | 2023 |
| Silverbay Holdings Limited | Real estate | 2025 |
| Sole Trader AI Ltd | Information & communication | 2026 |
| Sorrel Solar Ltd | Construction | 2020 |
| Specialist Industries Ltd | Information & communication | 2009 |
| Sporting Retail UK Ltd | Wholesale & retail | 2026 |
| Stepup Investments Limited | Real estate | 2020 |
| Surica Limited | Health & social care | 2025 |
| Sustainable Consulting Partnership Limited | Professional & scientific | 2013 |
| Syrona International Limited | Health & social care | 2023 |
| T Heggie Consulting Limited | Professional & scientific | 2023 |
| Tantalising North East Ltd | Health & social care | 2021 |
| Taysha Consulting Limited | Professional & scientific | 2014 |
| Tedfred Digital Limited | Information & communication | 2021 |
| Tedfred Media Limited | Information & communication | 2013 |
| THE Cabfusion Network Limited | Information & communication | 2015 |
| THE Elmdene Partnership Limited | Financial services | 2012 |
| THE Marketing Leadership Hub Limited | Information & communication | 2013 |
| THE Mental Company Ltd | Manufacturing | 2021 |
| THE Print Abides Ltd | Manufacturing | 2023 |
| THE Training Partnership (Education) Limited | Other services | 2012 |
| Tile Kiln Residents Limited | Households | 1982 |
| TMD Carpentry Limited | Construction | 2019 |
| Tomia Digital Ltd | Information & communication | 2023 |
| Trama Technologies Limited | Information & communication | 2025 |
| UK Mgmt Ltd | Real estate | 2014 |
| Vectis Securities Limited | Real estate | 1997 |
| Visual Security Ltd | Extraterritorial | 2019 |
| Walsh Build Limited | Construction | 2018 |
| Watershaw Properties LLP | | 2008 |
| West London Barbers Ltd | Other services | 2025 |
| Whynotcoco Limited | Professional & scientific | 2024 |