| Growing Beyond Partners UK (PVT) Ltd | Professional & scientific | 2023 |
| Half Halt Equestrian Limited | Wholesale & retail | 2020 |
| Handyman 2U Limited | Construction | 2006 |
| Harleybruce Ltd | Construction | 2020 |
| Harrold Consulting Ltd | Health & social care | 2022 |
| Hastings & Hastings Limited | Real estate | 2006 |
| Hautier Limited | Wholesale & retail | 2023 |
| Hazelwood Plato Estates Ltd | Real estate | 2025 |
| Henlow Aviation Limited | Transport & logistics | 2008 |
| Henlow Barbers Ltd | Other services | 2026 |
| Henlow Motor Services Ltd | Wholesale & retail | 2018 |
| Henlow Pavilion Management Limited | Administrative & support | 2016 |
| Henlow Pharma Ltd | Wholesale & retail | 2020 |
| Henlow Tandoori Limited | Hospitality | 2023 |
| Henlow Transport Solutions Ltd | Transport & logistics | 2022 |
| Herts & Cambs Building Services Ltd | Construction | 2022 |
| Hi-Spec Electrical Solutions Limited | Construction | 2010 |
| Hill 5.14 Media Limited | Information & communication | 2014 |
| Hokin Detech Ltd | Information & communication | 2024 |
| Hold That PIC Ltd | Professional & scientific | 2024 |
| Holland & Grey Ltd | Wholesale & retail | 2025 |
| Holy Smoke Ltd | Hospitality | 2024 |
| Homecaregrowth Experts Ltd | Professional & scientific | 2024 |
| Horrox Electrical Services Limited | Construction | 2014 |
| Hose Inspection Testing & Supply Ltd | Professional & scientific | 2002 |
| Hunter and Blake Ltd | Information & communication | 2019 |
| I Rekhi Ltd | Administrative & support | 2013 |
| Ikonn Design New Media Limited | Professional & scientific | 2000 |
| Infiniti Payroll Solutions Limited | Administrative & support | 2025 |
| Infiniti Staffing Solutions Limited | Administrative & support | 2023 |
| Inigo Architecture Limited | Professional & scientific | 2007 |
| Insight Exhibitions Ltd | Manufacturing | 2022 |
| Insight in Mind Ltd | Professional & scientific | 2023 |
| IRS Insulated Render Systems Ltd | Construction | 2025 |
| Ishara Ltd | Real estate | 2022 |
| Itec Optical Labs Ltd. | Manufacturing | 2014 |
| J & R Jandu Property Limited | Real estate | 2025 |
| JB Property & Home Improvements Services Ltd | Construction | 2025 |
| JBS Wholesalers Limited | Wholesale & retail | 2021 |
| JDA Architecture Ltd | Information & communication | 2023 |
| Jersey Lily Limited | Wholesale & retail | 2008 |
| JMM Business Solutions Limited | Administrative & support | 2026 |
| Just Vape & Juices Limited | Wholesale & retail | 2021 |
| Katie Shaw Coaching Ltd | Other services | 2025 |
| KBB Plumbing & Heating Limited | Construction | 2016 |
| KDF Property Management Ltd | Real estate | 2021 |
| KE Productions Ltd | Information & communication | 2026 |
| Kemm D Ltd | Health & social care | 2022 |
| Kids Holiday Camps Ltd. | Health & social care | 2022 |
| Kippo Limited | Transport & logistics | 2024 |
| KKS Auto Ltd | Wholesale & retail | 2022 |
| KRE8IVE Partners Ltd | Information & communication | 2010 |
| Kwhpublishing Limited | Information & communication | 2012 |
| Land of the Vapes & E-Liquids Ltd | Wholesale & retail | 2023 |
| Lawford Assets Limited | Real estate | 2025 |
| Lewis Plato Motorsport Limited | Professional & scientific | 2014 |
| Lfdc Supplies Ltd | Wholesale & retail | 2022 |
| Lights UP Theatre Academy Ltd. | Arts & recreation | 2012 |
| Little Luxe Pamper Parties Ltd | Other services | 2025 |
| Lower Stondon (BH) Management Limited | Households | 2013 |
| LRD Building Services Limited | Administrative & support | 2021 |
| Luggs Ltd | Wholesale & retail | 2025 |
| MAGIC4MINDS Ltd | Wholesale & retail | 2026 |
| MBF Sports Ltd | Education | 2022 |
| Meadow Care Services Ltd | Health & social care | 2025 |
| Meadow IT Consulting Limited | Information & communication | 2015 |
| Meadow View (Henlow) Management Company Limited | Real estate | 2020 |
| Medious Limited | Information & communication | 2015 |
| Melanie Carr Ltd | Professional & scientific | 2025 |
| Mentor Distribution Group Limited | Financial services | 2022 |
| Mentor Distribution Limited | Wholesale & retail | 1991 |
| Michael Leckie Photography Ltd | Other services | 2013 |
| Morae Limited | Information & communication | 2001 |
| Munroy Care Ltd | Health & social care | 2022 |
| N & R Property Group Ltd | Construction | 2025 |
| Netwasp.Net Limited | Information & communication | 1998 |
| Newbees and Tots Childcare Ltd | Health & social care | 2026 |
| Noak Industries Ltd | Information & communication | 2023 |
| Nomadic Sales Limited | Wholesale & retail | 2025 |
| Oaha Development Partnerships CIC | Education | 2025 |
| Oaha Ltd | Professional & scientific | 2023 |
| Oak and IVY Landscaping Ltd | Administrative & support | 2025 |
| Old Manor Farm Ltd | Agriculture & fishing | 2017 |
| Olive & Fred's Property Ltd | Real estate | 2025 |
| Olive & Pickle Property Ltd | Real estate | 2025 |
| Omahony Vehicle Hire Limited | Administrative & support | 2023 |
| Orbell Homes Limited | Construction | 2020 |
| Orchard Sourcing Ltd | Wholesale & retail | 2015 |
| Otoparts Limited | Wholesale & retail | 2011 |
| OWL Property Maintenance & Solution Limited | Construction | 2016 |
| P.H.Engineering Services Limited | Manufacturing | 2005 |
| Parker & Parker Engineering Consultancy Limited | Professional & scientific | 2024 |
| Payne Media Services Ltd | Other services | 2025 |
| PCS Homebuild Ltd | Construction | 2017 |
| PDC Developments Ltd | Construction | 2026 |
| Peel Street Consultants Ltd | Professional & scientific | 2020 |
| Perfect Temperature Ltd | Energy | 2025 |
| Pickles Plumbing Limited | Construction | 2020 |
| Pilar Mora London Limited | Manufacturing | 2026 |
| PJD Property Ltd | Households | 2022 |