| 8 Southfield Avenue Limited | Households | 2023 |
| A & R Marketing Limited | Administrative & support | 2005 |
| Arnott Group Limited | Manufacturing | 1976 |
| Borough Hill Limited | Real estate | 2008 |
| Bright Sparks Lighting Limited | Construction | 2010 |
| Dawson Accountancy and Management Ltd | Professional & scientific | 2024 |
| Easitill Limited | Information & communication | 1991 |
| Effective Gardens Ltd | Administrative & support | 2023 |
| Errigal Civils Limited | Construction | 2006 |
| Foden Ibex Limited | Wholesale & retail | 1963 |
| FOX Hill Grange Barns Ltd | Real estate | 2015 |
| FOX Hill Grange Farm Ltd | Agriculture & fishing | 2022 |
| GP Performance Ltd | Professional & scientific | 2013 |
| Haloed Ltd | Information & communication | 2025 |
| Harpur Developments Limited | Real estate | 1973 |
| Harris Hill Properties Limited | Real estate | 2001 |
| Hatton Park Limited | Real estate | 1999 |
| Herdwatch UK Limited | Information & communication | 2023 |
| HHP1 Ltd | Construction | 2025 |
| Inclusivus Ltd | Professional & scientific | 2024 |
| Industrial Site Maintenance Ltd | Administrative & support | 2008 |
| Industrial Site Maintenance-Resilience Ltd | Administrative & support | 2014 |
| Insima Holdings Ltd | Professional & scientific | 2026 |
| Insima Integrated Services Ltd | Administrative & support | 2026 |
| Insima Technology Ltd | Information & communication | 2026 |
| Insima Waste Management Ltd | Water & waste | 2026 |
| James & James 2000 Ltd | Financial services | 2023 |
| Jbbs 2021 Limited | Construction | 2021 |
| Kerno (UK) Limited | Information & communication | 2024 |
| Klabers Capital Limited | Financial services | 2015 |
| KP Studio Limited | Professional & scientific | 2004 |
| Mercedes AMG High Performance Powertrains Limited | Professional & scientific | 1983 |
| Micron Precision (Brixworth) Engineering Limited | Manufacturing | 1993 |
| Microtech Sales UK Limited | Information & communication | 1990 |
| Mobility Mojo (UK) Limited | Professional & scientific | 2024 |
| Palmer Family Investments Ltd | Professional & scientific | 2026 |
| Pay-Day Limited | Professional & scientific | 2024 |
| Pccs Group Ltd | Information & communication | 1993 |
| Pitsford Trading Ltd | Wholesale & retail | 2008 |
| Seagrave Care Developments (Northants) Limited | Extraterritorial | 2020 |
| Seagrave Developments Limited | Construction | 2000 |
| Seagrave Group Limited | Financial services | 2020 |
| Seagrave Holdings Limited | Professional & scientific | 2006 |
| Shape Consultants Limited | Professional & scientific | 2020 |
| Sheene Events Ltd | Hospitality | 2025 |
| Southern Drylining Limited | Construction | 2017 |
| Stable Securities Limited | Construction | 1970 |
| SW Scaffolding Limited | Construction | 2000 |
| T J Professional Services Limited | Professional & scientific | 2020 |
| Tenant Serve Ltd | Administrative & support | 2017 |
| TM Living Limited | Real estate | 2023 |
| Tripletee Developments Ltd. | Real estate | 2014 |
| Waste Start Limited | Water & waste | 2026 |
| Work at Height Ltd | Education | 2025 |