| Hawkeswood Holdings Limited | Financial services | 2015 |
| Hawklas Ltd | Wholesale & retail | 2023 |
| Hazgreen Limited | Other services | 2011 |
| Heath Glass & Glazing Limited | Construction | 2007 |
| Helen Vincent Limited | Financial services | 2014 |
| Hermosa Marine Limited | Professional & scientific | 2023 |
| Hi-Q Homes Ltd | Real estate | 2017 |
| Himarn Technology Limited | Professional & scientific | 2015 |
| Hiscox Homes Ltd | Real estate | 2021 |
| HJK (Fareham) Limited | Other services | 2017 |
| HJK (Romsey) Limited | Other services | 2017 |
| HKB Management Limited | Arts & recreation | 2013 |
| HM PH (GP) Ltd | Financial services | 2020 |
| Holdfast Safety & Drone Services Limited | Professional & scientific | 2023 |
| Holland Power Ltd | Wholesale & retail | 2022 |
| Home Property Maintenance Ltd | Construction | 2017 |
| Hooga Limited | Extraterritorial | 2006 |
| Houses & Houses Ltd | Real estate | 2021 |
| Hydroscape Systems Limited | Water & waste | 2012 |
| Hythe and Waterside Landscaping Limited | Administrative & support | 2024 |
| IAN Woods Electrician Limited | Construction | 2017 |
| Icon Sports Coaching Limited | Arts & recreation | 2010 |
| Impact Health Tech Ltd | Professional & scientific | 2021 |
| Impulsum Ltd | Information & communication | 2020 |
| Innovative Global Health Solutions Ltd | Professional & scientific | 2021 |
| International Sporting Club Ltd | Arts & recreation | 2020 |
| Interspill Limited | Administrative & support | 2016 |
| It's ALL About the Music Ltd | Information & communication | 2015 |
| J James Utilities Limited | Energy | 2016 |
| J Phillips Design & Build Limited | Construction | 2020 |
| J S Vehicles Limited | Administrative & support | 2014 |
| J Squared Property Limited | Construction | 2019 |
| J.P. Noyes (Building Contractor) Ltd | Administrative & support | 2020 |
| J3 Legacy Limited | Real estate | 2017 |
| J5 Communications (UK) Limited | Information & communication | 2012 |
| Jackson Bailey Limited | Real estate | 2017 |
| Jackup GB Ltd | Manufacturing | 2008 |
| James William Gilbert Limited | Administrative & support | 2025 |
| Jamrock Consultancy Ltd | Professional & scientific | 2018 |
| Jar@Feature Floors Limited | Construction | 2023 |
| JC Online Marketing Ltd | Professional & scientific | 2008 |
| Jeppetto Ltd | Real estate | 2023 |
| Jodie Moody Ltd | Professional & scientific | 2024 |
| Jooi Ltd. | Health & social care | 2020 |
| JPF Silgo Limited | Financial services | 2011 |
| JSS Scaffolding (Holdings) Limited | Construction | 2017 |
| JSS Scaffolding Limited | Construction | 2017 |
| JT Lettings Ltd | Real estate | 2024 |
| JT Services (South West) Ltd | Construction | 2011 |
| K & G Lift Services Limited | Construction | 2002 |
| K & G Tech Ltd | Information & communication | 2019 |
| K K Precision Limited | Financial services | 2015 |
| K&C Consultants Limited | Professional & scientific | 2017 |
| K&M Carriage Company Limited | Wholesale & retail | 2015 |
| Karric Developments Ltd | Administrative & support | 2005 |
| KBW Solutions Limited | Administrative & support | 2015 |
| KC Content Specialists Limited | Information & communication | 2024 |
| Keoah Limited | Professional & scientific | 2010 |
| KEV Sandall Joinery Limited | Manufacturing | 2015 |
| Khaia Ltd | Professional & scientific | 2023 |
| Kingsway Design & Advertising Ltd | Professional & scientific | 2013 |
| Kiwi Coding Limited | Information & communication | 2018 |
| KPR Drylining Limited | Construction | 2015 |
| KSJ Ventures Limited | Construction | 2007 |
| KTJ Access Ltd | Administrative & support | 2021 |
| Labeltrace Limited | Information & communication | 2019 |
| Langley Arboriculture Ltd | Agriculture & fishing | 2018 |
| Langley Utility Services Limited | Agriculture & fishing | 2020 |
| Latchy Event Management Ltd | Professional & scientific | 2011 |
| Laverock Therapeutics Limited | Professional & scientific | 2021 |
| LB Consultant Services Limited | Administrative & support | 2024 |
| LCM Assets Ltd | Financial services | 2025 |
| LEA Salomone Creative Ltd | Other services | 2024 |
| Leego/Uk Ltd | Hospitality | 2024 |
| LEO Leisure Limited | Arts & recreation | 2006 |
| Lexiray Limited | Arts & recreation | 2007 |
| LGE Mortgage Solutions Ltd | Financial services | 2017 |
| LGE Properties Solutions Ltd | Real estate | 2024 |
| Lifestyle Compass Ltd | Arts & recreation | 2016 |
| Linford Court Management Limited | Real estate | 1999 |
| Liquikno Limited | Professional & scientific | 2020 |
| Little 1 Nursery Ltd | Education | 2010 |
| Little Oaks OUT of School Club Limited | Administrative & support | 2008 |
| Livingxlg Ltd. | Professional & scientific | 2017 |
| LLB Echocardiography Limited | Health & social care | 2022 |
| Lloyd Anthony Interiors Limited | Construction | 2024 |
| Loftus Property Investments Limited | Real estate | 2026 |
| Logan Electronics Limited | Manufacturing | 2005 |
| Louis and Co Maison Limited | Wholesale & retail | 2021 |
| LS P&D Limited | Real estate | 2022 |
| LSK Consultants Limited | Professional & scientific | 2023 |
| Luxion Sales Limited | Wholesale & retail | 2003 |
| M D M Driver Training Ltd | Transport & logistics | 2009 |
| M3 Security Limited | Manufacturing | 2008 |
| Maddison Transport Ltd | Transport & logistics | 2007 |
| Mahabharata the Film Limited | Information & communication | 2015 |
| Maintenance & Beyond Limited | Construction | 2013 |
| Majortek Components Limited | Manufacturing | 1991 |
| Malcolm Sonn Limited | Construction | 2006 |
| Manchester Leases Limited | Real estate | 2019 |