| Healthy Cargo Limited | Wholesale & retail | 2018 |
| Henderson & Pearson Developments Limited | Real estate | 1954 |
| Henderson & Pearson Limited | Real estate | 1952 |
| Hereford Funds LLP | | 2017 |
| Heronden Holdings Limited | Professional & scientific | 1989 |
| Hgmlm Ltd | Professional & scientific | 2019 |
| High Weald Planning and Development Ltd | Construction | 2023 |
| Hill Court a RTM Company Limited | Households | 2021 |
| Hill Court B RTM Company Limited | Households | 2021 |
| Hill Court C RTM Company Limited | Households | 2021 |
| Hindhead Advisory Limited | Financial services | 2016 |
| Historical Capital Limited | Extraterritorial | 2016 |
| HJC Property 01 Limited | Real estate | 2026 |
| HK Barbers London Limited | Other services | 2025 |
| Hollydene Road Residents Association Limited | Real estate | 1990 |
| Holmekey Limited | Construction | 1998 |
| Holmesdale Terrace Management Company Limited | Households | 2024 |
| Hotham House (Hull) Right to Manage Company Limited | Households | 2020 |
| House of Farrow Limited | Information & communication | 2024 |
| Hucksters Advertising & Publishing Consultants Limited | Information & communication | 2002 |
| Huntson Building Services Ltd | Construction | 2015 |
| Hurst Wood Residents' Management Company Limited | Households | 2017 |
| Hurstfield (Ticehurst) Phase 2 Limited | Real estate | 2010 |
| Hviid Energy Ltd | Energy | 2009 |
| IAMB2B Ltd | Professional & scientific | 2021 |
| Impact Interiors South East Ltd | Construction | 2025 |
| Incremental Capital LLP | | 2004 |
| Independent Styling Services Ltd | Professional & scientific | 2023 |
| Industry in the Streets Limited | Professional & scientific | 2010 |
| Indy Associates Limited | Health & social care | 2015 |
| Inkerman Limited | Wholesale & retail | 1996 |
| Insuraflat Limited | Financial services | 2002 |
| Interbyte Ltd | Information & communication | 1997 |
| Internet DM Limited | Information & communication | 2020 |
| Invetos Limited | Real estate | 2026 |
| Invicta Property Partnership Limited Liability Partnership | | 2007 |
| IX Exchange UK Ltd | Financial services | 2021 |
| J J Cates Plumbing & Heating Services Limited | Construction | 2008 |
| J Marsh Consultants Ltd | Information & communication | 2025 |
| Jackall Ltd | Wholesale & retail | 2017 |
| JAD Property Management Limited | Real estate | 2006 |
| Jango Projects Ltd | Professional & scientific | 2024 |
| Jaren Consulting Limited | Professional & scientific | 2015 |
| Jarvah Ltd | Hospitality | 2026 |
| Jayessjay Ltd | Real estate | 2024 |
| JB Services Kent Ltd | Other services | 2026 |
| JC Forestry Services Ltd | Agriculture & fishing | 2025 |
| Johnpaul Ltd | Real estate | 2023 |
| Jolliffe Consulting Limited | Information & communication | 2023 |
| JSS Golf LLP | | 2018 |
| K & M Estates Limited | Real estate | 2000 |
| K2K Pizza Ltd | Hospitality | 2025 |
| Kamuro Events Limited | Arts & recreation | 2023 |
| KB Ignis Ltd | Wholesale & retail | 2024 |
| Keith Ransom Ltd | Administrative & support | 2014 |
| Kensington Court Right to Manage Company Limited | Households | 2015 |
| Kent Panthers Basketball Club Ltd | Wholesale & retail | 2021 |
| Kent Sussex Ecology Ltd | Professional & scientific | 2022 |
| Keylux Property Agency Limited | Real estate | 2023 |
| Keystone Concepts Limited | Construction | 2009 |
| KG Heating and Plumbing (Kent) Ltd | Construction | 2015 |
| Kgml Limited | Construction | 2012 |
| KHL Assets LLP | | 2011 |
| KHL Group LLP | | 2003 |
| KHL Media Limited | Information & communication | 1999 |
| KHL Publishing Ltd. | Information & communication | 1989 |
| Kirby Enterprises Limited | Extraterritorial | 2020 |
| Kirkby Monahan Publicity Ltd | Professional & scientific | 2026 |
| Kitchen Engineering Limited | Wholesale & retail | 1989 |
| Korcula (BVI) Societe Anonyme | | 2006 |
| L.V.A. Logic Limited | Information & communication | 2017 |
| Ladybirds Nursery and Preschool Ltd | Education | 2013 |
| Lagona Consultants Limited | Information & communication | 1995 |
| Landvision South East Ltd | Professional & scientific | 2013 |
| Langley Equity Limited | Real estate | 2018 |
| Lattenbury Developments Ltd | Construction | 2024 |
| Lavender Heath Gardens Management Co. Limited | Real estate | 2010 |
| Leaderboard Golf Courses (Sandford Springs) Limited | Administrative & support | 2011 |
| Lepide (UK) Ltd | Information & communication | 2021 |
| Leviathan Water Treatment Ltd | Professional & scientific | 2013 |
| LG Sculpture Limited | Arts & recreation | 2011 |
| LGS Plastering Ltd | Construction | 2019 |
| Lionfoxco Limited | Wholesale & retail | 2017 |
| Lions Management Company Limited | Households | 2018 |
| Little Angley Farm Ltd | Administrative & support | 2019 |
| Live Wildly Ltd | Information & communication | 2020 |
| Living Collective Ltd | Real estate | 2022 |
| Looking Good Opticians Limited | Professional & scientific | 1989 |
| Loope Interiors Ltd | Professional & scientific | 2020 |
| Lordswift Limited | Information & communication | 1999 |
| LPF Limited | Real estate | 2025 |
| Lumira Cleaning Ltd | Administrative & support | 2025 |
| Luther Landscapes Ltd | Administrative & support | 2016 |
| Lyndhurst Property Investments Limited | Real estate | 2020 |
| M & DH Properties Ltd | Real estate | 2025 |
| M-Mac Ltd | Construction | 2026 |
| Mack Woodcraft Ltd | Manufacturing | 2017 |
| Macneash Ltd | Real estate | 2021 |
| Magni Fitness Ltd | Other services | 2025 |
| Maison Kaftan Limited | Manufacturing | 2022 |