| 1710 Capital Partners Limited | Administrative & support | 2009 |
| A.P. Power Limited | Real estate | 1982 |
| Apsley Recruitment Limited | Administrative & support | 2008 |
| Bellacet Ltd | Construction | 2009 |
| Building Sustainability Ltd | Construction | 2021 |
| Byer KOI Farm Limited | Agriculture & fishing | 2017 |
| Cake Actually Ltd | Hospitality | 2022 |
| Circle Sky Limited | Arts & recreation | 2022 |
| CPM Consulting Limited | Professional & scientific | 2025 |
| Direct Connect Minibus Travel Ltd | Transport & logistics | 2026 |
| Focus Rigging & Scaffolding Limited | Construction | 2008 |
| GEM Insight Consulting Ltd | Professional & scientific | 2017 |
| GJF Rail Limited | Administrative & support | 2015 |
| Graves Build Ltd | Construction | 2020 |
| Herts Servicing Ltd | Manufacturing | 2025 |
| Hope Vets Limited Liability Partnership | | 2007 |
| Inagas Limited | Wholesale & retail | 1991 |
| Inscribe Systems Ltd | Information & communication | 2024 |
| ITS ALL Glow Events Ltd | Administrative & support | 2019 |
| Law Abroad Limited | Professional & scientific | 1997 |
| MTS Herts Ltd | Wholesale & retail | 2014 |
| Outsource IT Ltd | Information & communication | 2019 |
| Pioneer Profiles Ltd | Manufacturing | 2018 |
| Portfolio Select Ltd | Arts & recreation | 2008 |
| Prime Storage Installations Ltd | Construction | 2021 |
| Roughstuff Retail Ltd | Manufacturing | 2020 |
| Sabine Close Management Company Limited | Households | 2022 |
| Sharbridge Consultants | | 1999 |
| Signature Sport Ltd | Administrative & support | 2017 |
| South East Pubs Ltd | Hospitality | 2015 |
| Studio Lutra Limited | Professional & scientific | 2019 |
| Succession Nominees Ltd | Financial services | 2021 |
| SW Management Consultancy Limited | Information & communication | 2008 |
| T Browne Services (UK) Ltd | Professional & scientific | 2015 |
| THE Barbers of Bovingdon Ltd | Other services | 2017 |
| THE Olive Tree Limited | Real estate | 1991 |
| Tony Marks Limited | Construction | 2011 |
| Upright Installation Services Limited | Construction | 2005 |
| Wildgoose Events Limited | Information & communication | 2003 |