| MKS Food Distribution Ltd | Wholesale & retail | 2011 |
| MKS Foods Limited | Wholesale & retail | 2012 |
| Mobile Automotive Systems Limited | Wholesale & retail | 2006 |
| Modernoption Limited | Professional & scientific | 2000 |
| Monarch Hardware Ltd | Wholesale & retail | 2024 |
| Monetis Limited | Information & communication | 2025 |
| Monteagle Gardens Limited | Households | 2016 |
| Montum Consulting Limited | Professional & scientific | 2016 |
| Morley Property Developments Ltd | Construction | 2026 |
| Motomine Limited | Wholesale & retail | 2022 |
| MR Q Takeaway Limited | Hospitality | 2020 |
| MTM Meatsmiths Limited | Wholesale & retail | 2024 |
| Muse LDN Ltd | Information & communication | 2023 |
| MVM Autoworx Ltd | Wholesale & retail | 2025 |
| MWB Accounting Limited | Administrative & support | 2017 |
| N Plus 1 - Electrical Design Limited | Manufacturing | 2014 |
| Nakan&Pon Ltd | Professional & scientific | 2017 |
| Nassol Limited | Professional & scientific | 2001 |
| New E Law Limited | Professional & scientific | 2000 |
| Nola Capco. Ltd | Households | 2025 |
| Novatron Scientific Ltd | Wholesale & retail | 2008 |
| NS52 Football Ltd | Education | 2024 |
| Nu-Approach Ltd | Professional & scientific | 2014 |
| Oliver Gasson Properties Ltd | Real estate | 2021 |
| Olivia Tidmarsh Events Ltd | Administrative & support | 2017 |
| Omega Scientific Limited | Information & communication | 2010 |
| Onlicad Ltd | Information & communication | 2014 |
| Opole Ltd | Real estate | 2025 |
| Orbeis Limited | Information & communication | 2020 |
| Orcward Ltd | Wholesale & retail | 2023 |
| Otzen Redressed Limited | Administrative & support | 2014 |
| Overclock Films Limited | Wholesale & retail | 2000 |
| PAN & PEA Limited | Wholesale & retail | 2020 |
| Paranormal Presence Ltd | Arts & recreation | 2024 |
| Parkashwati Properties Ltd | Real estate | 2024 |
| Paul Alexander Properties Ltd | Real estate | 2019 |
| Paul Michael Goddard Interiors Limited | Construction | 2003 |
| Peaky Bakers Ltd | Hospitality | 2021 |
| Pets Coutures Limited | Other services | 2026 |
| Pets Sanctuary Limited | Other services | 2021 |
| Phicor Limited | Arts & recreation | 2026 |
| Phiphase Limited | Professional & scientific | 2016 |
| Physical Digital Limited | Professional & scientific | 2005 |
| Pina Lighting Ltd | Administrative & support | 2025 |
| Pineapple Labs Limited | Information & communication | 2011 |
| Platinum Contract Cleaning Limited | Administrative & support | 2005 |
| Pmad Properties Limited | Real estate | 2022 |
| PMM Limited | Real estate | 2021 |
| Polestar Financial Planning Ltd | Financial services | 2019 |
| Polestar Holdings Ltd | Financial services | 2019 |
| Practical Accounting Solutions Ltd | Professional & scientific | 2020 |
| Prana Carpentry Limited | Manufacturing | 2022 |
| Premier Local Convenience Stores Limited | Wholesale & retail | 2018 |
| Primita Ltd | Education | 2008 |
| Primrose Electrical Services Ltd | Construction | 2019 |
| Print Custom Apparel Ltd | Manufacturing | 2026 |
| Pro Destra Ltd | Construction | 2006 |
| Project Deliver Ltd | Construction | 2018 |
| Propcov Limited | Energy | 2018 |
| Puff ‘N’ Fluff Spa Limited | Professional & scientific | 2019 |
| Purple Tasche Limited | Professional & scientific | 2012 |
| PW Cars Ltd | Wholesale & retail | 2013 |
| Quantrellis Capital Limited | Financial services | 2025 |
| Quantrellis Developments Limited | Extraterritorial | 2025 |
| R Danyal Ltd | Construction | 2025 |
| R G a Associates Limited | Extraterritorial | 2015 |
| R.D. ROW (Meters) Limited | Water & waste | 1962 |
| RAE (Structures) Limited | Professional & scientific | 2012 |
| Real India Taste Limited | Hospitality | 2020 |
| Real Proactive Health Practice Limited | Health & social care | 2025 |
| Red Maple Design and Build Ltd | Construction | 2022 |
| Regmedix Ltd | Administrative & support | 2023 |
| Renascence Vehicle Leasing Limited | Administrative & support | 2005 |
| Resources KE Ltd | Other services | 2024 |
| RF Financial Services Limited | Financial services | 2013 |
| Rhino Construction & Plastering Ltd | Construction | 2017 |
| Rhopoint Metrology Holdings Limited | Financial services | 2024 |
| Rhopoint Metrology Limited | Professional & scientific | 2000 |
| Ri-Solve Business Consultancy Limited | Professional & scientific | 2007 |
| Rich Projects Ltd | Professional & scientific | 2019 |
| Ridenation Ltd | Wholesale & retail | 2018 |
| RKS Carpentry & Building Ltd | Manufacturing | 2025 |
| RMO Technology Ltd. | Information & communication | 2016 |
| RPB Group Ltd | Real estate | 2022 |
| Runnymede Hvac Ltd | Financial services | 2018 |
| Runnymede Response Ltd | Construction | 2011 |
| S&H Global Sourcing Ltd | Wholesale & retail | 2022 |
| Satzone IT (UK) Ltd | Information & communication | 2009 |
| Sayers Electrical Contractors Limited | Construction | 2014 |
| Scanco Ltd | Construction | 2024 |
| Screenreps Limited | Professional & scientific | 2023 |
| Seebys Consultancy Limited | Professional & scientific | 2009 |
| Sema Management Ltd | Professional & scientific | 2021 |
| Serendipity Beautician Limited | Construction | 2011 |
| Serene Space Cleaning Ltd | Administrative & support | 2025 |
| Serenitea Retreats Ltd | Households | 2024 |
| Servon Design Limited | Information & communication | 2007 |
| SF Agency Ltd | Information & communication | 2017 |
| SF Webdesign Ltd | Information & communication | 2016 |
| Shrobe Consultancy Limited | Information & communication | 2010 |