| Martin NYE Properties Ltd | Construction | 2019 |
| Mase Communications Ltd | Administrative & support | 2020 |
| Mattamy Homes Limited | Real estate | 2023 |
| Maximise Design and Build Limited | Information & communication | 2015 |
| Meadowcroft Care Limited | Health & social care | 2007 |
| Medina Investments Limited | Real estate | 2009 |
| Mentmore Game Farm Limited | Agriculture & fishing | 2017 |
| Michael a. FOY Medico-Legal Limited | Health & social care | 2010 |
| Michael Anthony Aylesbury Ltd | Real estate | 2020 |
| Michael Anthony Village Homes Ltd | Real estate | 2022 |
| Michael Rickard Travel Ltd | Administrative & support | 2023 |
| MJB Consulting Limited | Information & communication | 2007 |
| MJG Plastering Limited | Construction | 2013 |
| MJS Electrical Installations Ltd | Manufacturing | 2010 |
| Mughal Holdings Limited | Real estate | 2019 |
| New Ladybirds Ltd | Wholesale & retail | 2019 |
| Nimbus Signalling Consulting Ltd | Construction | 2015 |
| NMP Audio Limited | Other services | 2014 |
| North Bucks Medical Services Ltd | Health & social care | 2023 |
| Nurture and Grow Childcare Ltd | Health & social care | 2024 |
| P5 Creative Build Limited | Manufacturing | 2024 |
| Parex Building Ltd | Construction | 2024 |
| Paters Properties Limited | Real estate | 2015 |
| PDW Carpentry Limited | Construction | 2026 |
| Penglen Properties Limited | Construction | 1973 |
| Percipio Training Ltd | Education | 2015 |
| Piling & Underpinning Specialist Ltd | Construction | 2020 |
| Power Magnetics Limited | Wholesale & retail | 2013 |
| Q Basement Ltd | Construction | 2014 |
| R P Taylor Carpentry Ltd | Construction | 2018 |
| RJG Bathrooms Ltd | Construction | 2018 |
| RJJ Packaging & Design Limited | Wholesale & retail | 2004 |
| Rluke Scaffolding Limited | Construction | 2023 |
| Robobo Land Limited | Real estate | 2017 |
| Running Duck Limited | Professional & scientific | 2024 |
| SAM KC Electrical Limited | Construction | 2025 |
| Sambrook Carpets (Winslow) Limited | Wholesale & retail | 2003 |
| Second Phase Agency Ltd | Arts & recreation | 2025 |
| Simon Miles Consulting Limited | Professional & scientific | 2024 |
| SIR Thomas Fremantle School | Education | 2012 |
| SMM & MJM Limited | Financial services | 2024 |
| Sonny Scenic Services Ltd | Information & communication | 2018 |
| Specialist Glazing Solutions Limited | Construction | 2019 |
| Tanglewood Creative Ltd | Information & communication | 2020 |
| Tax-Form Solutions Limited | Professional & scientific | 1997 |
| THE Building Company Bucks Limited | Construction | 2018 |
| THE Bureau Agency Limited | Administrative & support | 2010 |
| THE Lakes Bakery Limited | Wholesale & retail | 2022 |
| THE Organic MAN Limited | Wholesale & retail | 2019 |
| THE Pachamama Collective Ltd | Wholesale & retail | 2024 |
| THE Sorcerer’S Watering Hole Ltd | Hospitality | 2019 |
| Themeclear Limited | Real estate | 1990 |
| TIN ARM Engineering Ltd | Information & communication | 2022 |
| TMO Reclaim Limited | Wholesale & retail | 2021 |
| Tobin Jones Block Management Limited | Real estate | 2022 |
| Tobin Jones Classic Military Limited | Other services | 2023 |
| TOM Oliver Nutrition Limited | Hospitality | 2013 |
| Top Coat SET Painting Ltd | Construction | 2011 |
| Transition Computing Limited | Information & communication | 1998 |
| Trivespace Living Limited | Health & social care | 2025 |
| UK Flooring (UK) Limited | Construction | 2005 |
| Ultimate Bodyworx Limited | Wholesale & retail | 2023 |
| Underwood Films Limited | Professional & scientific | 2017 |
| Velt Farms Limited | Real estate | 1976 |
| Wave Technology Limited | Professional & scientific | 1989 |
| Wears Bros. (Plumbing & Heating) Limited | Administrative & support | 2010 |
| White House Dental Studio Limited | Health & social care | 2014 |
| Winchester Engineering (Aylesbury) Limited | Manufacturing | 2004 |
| Windmill Veterinary Centre Limited | Professional & scientific | 2010 |
| Winslow Motor Ltd | Wholesale & retail | 2026 |
| Woodlands Farm (Aston Clinton) Limited | Agriculture & fishing | 1995 |
| Woodward Family Holdings Limited | Construction | 2021 |
| Woodward Family Holdings Westcott Plot 6 Limited | Real estate | 2025 |
| Yety Build Ltd | Education | 2025 |
| ZAX Fire and Maintenance Ltd | Construction | 2023 |
| Zeercle Limited | Wholesale & retail | 2023 |