| Lulworth House (Bournemouth) Limited | Households | 1970 |
| Lumberjack Investment Limited | Construction | 2015 |
| Lume Interiors Ltd | Construction | 2021 |
| Lumenessence Ltd | Information & communication | 2026 |
| Lumenvox Ltd | Administrative & support | 2025 |
| Lumiere Mansion Ltd | Wholesale & retail | 2026 |
| Lumiere Peony Ltd | Other services | 2026 |
| Lumimoments Ltd | Wholesale & retail | 2024 |
| Lumina Mother and Baby Limited | Health & social care | 2026 |
| Luminent Ltd | Professional & scientific | 2020 |
| Luna and SOL Tattoo Ltd | Arts & recreation | 2024 |
| Luna Care Ltd | Health & social care | 2021 |
| Lunoire Ltd | Arts & recreation | 2026 |
| Luscombe (Poole) Management Company Limited | Households | 2020 |
| Luther Winton Holdings Ltd | Information & communication | 2025 |
| Luvod London Limited | Wholesale & retail | 2025 |
| LUX Bespoke Doors Ltd | Manufacturing | 2020 |
| LUX Properties (Bournemouth) Ltd | Real estate | 2016 |
| LUX Seeker Ltd | Wholesale & retail | 2014 |
| LUX Unity Ltd | Wholesale & retail | 2021 |
| Luxe Motor Group Limited | Wholesale & retail | 2016 |
| Luxe Nails Hampshire Ltd | Other services | 2023 |
| Luxe Run Ltd | Transport & logistics | 2024 |
| Luxeline Chauffeurs Group Ltd | Transport & logistics | 2025 |
| Luxerevivalcarpets Ltd | Administrative & support | 2025 |
| Luxesparkleshop Limited | Wholesale & retail | 2025 |
| Luxessentials Ltd | Other services | 2023 |
| Luximmo Holidays Limited | Administrative & support | 2025 |
| Luxprime Transport Ltd | Transport & logistics | 2025 |
| Luxury Nails (HN) Limited | Other services | 2022 |
| Luxury Removals and Transport Ltd | Transport & logistics | 2023 |
| LV Bonds PLC | Financial services | 2023 |
| LV Capital Limited | Financial services | 2012 |
| LV Care Limited | Health & social care | 2019 |
| LV Commercial Mortgages Limited | Financial services | 2013 |
| LVL 7 Ltd | Professional & scientific | 2020 |
| LVL UP Gaming Ltd | Wholesale & retail | 2014 |
| LW Bars Limited | Hospitality | 2026 |
| LXI Luxury Interior Ltd | Professional & scientific | 2024 |
| Lxworx Ltd | Arts & recreation | 2012 |
| Ly's Group Ltd | Wholesale & retail | 2025 |
| Lykus Technologies Limited | Information & communication | 2016 |
| Lyles Consultancy Ltd | Professional & scientific | 2025 |
| LYM Trans Ltd. | Transport & logistics | 2017 |
| Lymington Auctions Ltd | Other services | 2019 |
| Lymington Fields Management Company Limited | Households | 2006 |
| Lyndon Gate Freehold Company Limited | Households | 2005 |
| Lynes Hall Management Company Limited | Households | 1996 |
| Lynk Holdings Ltd | Financial services | 2022 |
| Lynk Trading Ltd | Administrative & support | 2021 |
| Lynnita Court Management Ltd | Real estate | 1998 |
| Lynwood RTM Company Limited | Households | 2015 |
| Lynx Clearance Limited | Extraterritorial | 2013 |
| Lynx Events Ltd | Hospitality | 2019 |
| Lysistrata Management Company Limited | Households | 1999 |
| Lythe Place Freehold Limited | Households | 1998 |
| M & M Embalming Ltd | Other services | 2025 |
| M & M Horsburgh Homes LLP | | 2023 |
| M & N Pearl Limited | Health & social care | 2006 |
| M & R Paving & Landscaping Specialists Ltd | Construction | 2025 |
| M & S Flooring Limited | Construction | 2012 |
| M Anwar Ltd | Wholesale & retail | 2025 |
| M Bourne Construction Ltd | Construction | 2022 |
| M C Care Solutions Ltd | Health & social care | 2020 |
| M D Construction Services Limited | Construction | 2004 |
| M D Stocks Electrical Limited | Construction | 2014 |
| M Groundworks & Driveways Ltd | Construction | 2024 |
| M Harris (Southbourne) Limited | Wholesale & retail | 2014 |
| M I a Investments Limited | Real estate | 2005 |
| M I M Construction Limited | Construction | 2006 |
| M J GUY Limited | Water & waste | 2020 |
| M J Howlett Builders Limited | Construction | 2006 |
| M J Moore Transport Limited | Transport & logistics | 2003 |
| M K Property & Letting Limited | Construction | 2011 |
| M Ksyk Engineering Service Ltd | Manufacturing | 2017 |
| M Loader & Sons Contractor Bournemouth Ltd | Arts & recreation | 2019 |
| M M Willis Decor Limited | Construction | 2018 |
| M Mussa Mart Ltd. | Wholesale & retail | 2026 |
| M Potter Consultants Limited | Manufacturing | 2018 |
| M Pugh Brickwork Ltd | Other services | 2004 |
| M S Residential Limited | Construction | 2015 |
| M Spicer Ltd | Wholesale & retail | 2015 |
| M W Building and Plastering Services Limited | Construction | 2016 |
| M W Gardens Landscapes and Driveways Ltd | Administrative & support | 2022 |
| M Wake Carpentry Limited | Manufacturing | 2025 |
| M Warwick Carpentry Limited | Construction | 2002 |
| M Warwick Holdings Limited | Professional & scientific | 2006 |
| M&A Dorset Services Ltd | Construction | 2015 |
| M&D Barbering Services Ltd | Professional & scientific | 2026 |
| M&D Barbers Ltd | Education | 2026 |
| M&E Mills Holdings Ltd | Financial services | 2017 |
| M&E Mills Limited | Financial services | 2021 |
| M&F Pitman Ltd | Real estate | 2026 |
| M&L Jefferis Ltd | Real estate | 2025 |
| M&N Management Ltd | Administrative & support | 2019 |
| M&S Civils Ltd | Construction | 2025 |
| M&S T/A Lahore Chatkhara Ltd | Hospitality | 2024 |
| M'S Bakery Ltd | Manufacturing | 2015 |
| M'S Building Supplies Limited | Wholesale & retail | 2012 |
| M-Balm Ltd | Other services | 2013 |