| Kingham Homes Limited | Construction | 2016 |
| Kirdford Village Stores Limited | Wholesale & retail | 2016 |
| KJ Car Corp Ltd | Wholesale & retail | 2026 |
| KJ Financial Consulting Ltd | Professional & scientific | 2024 |
| KJG Construction Ltd | Construction | 2026 |
| KJL Developments Limited | Real estate | 2004 |
| Kliënt Ltd | Administrative & support | 2026 |
| Knights Retro Ltd | Wholesale & retail | 2026 |
| Knox Knox Ltd | Information & communication | 2026 |
| Kokoszka Investments Limited | Hospitality | 2002 |
| Kombikeg Ltd | Hospitality | 2016 |
| Kris Fire Protection Ltd | Construction | 2023 |
| L&S Fire & Security Ltd | Administrative & support | 2024 |
| Laker Brickwork & Construction Ltd | Construction | 2024 |
| Laker P Limited | Wholesale & retail | 2016 |
| Lambs Terracotta & Faience Ltd | Extraterritorial | 1992 |
| Lamina Dielectrics Holdings Limited | Financial services | 2019 |
| Landmark Supervision and Consultancy Limited | Health & social care | 2017 |
| Lapsley Electrical Contractors Limited | Administrative & support | 2017 |
| Laura Hayter Ltd | Professional & scientific | 2025 |
| Lauren Macdonald Artistry Ltd | Other services | 2024 |
| Leajames Design Ltd | Professional & scientific | 2023 |
| Lees Chemicals Ltd | Manufacturing | 2025 |
| Leith Ecology Consulting Ltd | Professional & scientific | 2025 |
| Leterme Dowling Limited | Administrative & support | 2014 |
| Level UP Executive Assistants Ltd | Administrative & support | 2024 |
| Lewis Enright Limited | Information & communication | 2025 |
| Libation Nation Ltd | Manufacturing | 2024 |
| LID Lamps Limited | Wholesale & retail | 2019 |
| Lightscapes Limited | Construction | 2006 |
| Linden House (Loxwood) Limited | Households | 1993 |
| Linfield Precision Engineering Limited | Manufacturing | 2004 |
| Linguas Francas Limited | Financial services | 2019 |
| Liquid Webspace Ltd | Information & communication | 2023 |
| Little Bean Cafe Billingshurst Limited | Hospitality | 2020 |
| Little Bean Enterprises Limited | Hospitality | 2019 |
| Littleboatman Consultancy Limited | Professional & scientific | 2017 |
| Littlebrollymonster Limited | Hospitality | 2019 |
| Living in Style Gallery Ltd | Wholesale & retail | 2019 |
| Lizzie Robinson Limited | Professional & scientific | 2024 |
| LJR Fencing Ltd | Agriculture & fishing | 2022 |
| LKB Cooling Limited | Energy | 2025 |
| Lockmoor Limited | Construction | 1995 |
| Logic Managed Services Ltd | Administrative & support | 2022 |
| Longford Living Ltd | Real estate | 2023 |
| Louis Arjuna Ltd | Wholesale & retail | 2022 |
| Louis Wilson Ltd | Administrative & support | 2017 |
| Love Flower Limited | Hospitality | 2025 |
| LOW Fell Consultancy Limited | Professional & scientific | 2017 |
| Loxwood Farm Place Management Limited | Administrative & support | 1998 |
| Loxwood Integrity Limited | Professional & scientific | 2025 |
| Loxwood Medical Services Limited | Health & social care | 2008 |
| LPG Protech Limited | Professional & scientific | 2023 |
| LTM Properties Limited | Real estate | 2015 |
| Luck HAS Arrived Ltd | Wholesale & retail | 2025 |
| Lucky Charms Club Ltd | Manufacturing | 2023 |
| Lucy Capel Homes Ltd | Real estate | 2024 |
| Lulu's Friends Ltd | Agriculture & fishing | 2023 |
| LUV2SK8 Limited | Arts & recreation | 2018 |
| LW Sports Imagery Limited | Arts & recreation | 2019 |
| Lyonsafe Ltd. | Professional & scientific | 2022 |
| M W Hedges Garden Maintenance Services Limited | Administrative & support | 2012 |
| M-Sabai Limited | Administrative & support | 2024 |
| Macade Trading Limited | Real estate | 2002 |
| Macrae Electrical Services Ltd | Construction | 2024 |
| Magic P Waste Collection Ltd | Water & waste | 2024 |
| Magson Engineering Consultants Limited | Manufacturing | 2026 |
| Mahne Creative Media Limited | Information & communication | 2017 |
| Main Agriculture and Plant Services Ltd | Agriculture & fishing | 2024 |
| Majjik Limited | Hospitality | 2002 |
| Makhaya Limited | Households | 2002 |
| Manav Corporation Ltd | Wholesale & retail | 2017 |
| Mansell Mctaggart Billingshurst Limited | Real estate | 2011 |
| Manwood Associates Ltd | Professional & scientific | 2021 |
| MAP IT OUT Ltd | Information & communication | 2016 |
| Maple Leaf Cars Limited | Extraterritorial | 2007 |
| Maplefield Construction Limited | Construction | 2021 |
| Mark Beacock Ltd | Arts & recreation | 2015 |
| Mark Smith Heating Limited | Construction | 2016 |
| Markfowlerdesign Ltd | Professional & scientific | 2019 |
| Marrk Limited | Real estate | 2002 |
| Martyn Ellis (UK) Ltd | Other services | 2014 |
| Mason Woodbury Limited | Construction | 2016 |
| Mayfields (Loxwood) Residents Management Company Limited | Households | 2009 |
| Medaldi Limited | Wholesale & retail | 2010 |
| Media IS OUR Life Limited | Arts & recreation | 2015 |
| Medvora Ltd | Professional & scientific | 2025 |
| Menace Scaffolding Ltd | Construction | 2021 |
| Meridian Aviation Services Ltd | Professional & scientific | 2025 |
| Mersin 90 Ltd | Hospitality | 2026 |
| Mesh Solutions Limited | Professional & scientific | 2011 |
| MET Associates Limited | Professional & scientific | 2009 |
| MG Billyhurst Legal Limited | Other services | 2018 |
| MG Billyhurst Limited | Information & communication | 2016 |
| MH the Label Ltd | Wholesale & retail | 2021 |
| Michael Taylor Associates Limited | Agriculture & fishing | 1989 |
| Midknight Productions Ltd | Information & communication | 2014 |
| Mike Gibbons Associates Limited | Professional & scientific | 2008 |
| Mike Lord Limited | Construction | 2003 |
| Millard Ltd | Wholesale & retail | 2016 |