| Love My Bike Shop Ltd | Wholesale & retail | 2020 |
| Lovebathrooms.Com Limited | Extraterritorial | 2018 |
| Lovelock Estates Ltd | Real estate | 2022 |
| LOW Cost Janitorial Supplies Ltd | Administrative & support | 2024 |
| Lowe Digital Ltd | Information & communication | 2020 |
| Loxwood Nurseries (Guildford Road) Residents Management Company Limited | Households | 2017 |
| Loxwood Nurseries Phase 2 (Guildford Road) Residents Management Company Limited | Households | 2024 |
| LQS IT Group Ltd | Wholesale & retail | 2021 |
| LRB Financial Planning Ltd | Professional & scientific | 2020 |
| LRG (UK) Limited | Professional & scientific | 2015 |
| LRG Employees Limited | Professional & scientific | 2017 |
| LRG Financial Services Limited | Financial services | 1996 |
| LS Building & Construction South Ltd | Construction | 2025 |
| LS Franchise Ltd | Real estate | 2016 |
| LTA Roofline Services Ltd | Construction | 2021 |
| LTH Investments Limited | Administrative & support | 2005 |
| LTK Property Services Limited | Construction | 2013 |
| Lucanus Limited | Professional & scientific | 2008 |
| Lucas Mechanical Services Limited | Manufacturing | 2002 |
| LUCK199 Ltd | Hospitality | 2020 |
| Luckett's Property Limited | Real estate | 2020 |
| Lucky Bubble Camberley Ltd | Hospitality | 2023 |
| Lucky Building Services Ltd | Construction | 2022 |
| Lucky Natural Health Ltd | Health & social care | 2022 |
| Luff & Wilkin Property Specialists Ltd | Real estate | 2012 |
| Luff Associates Ltd | Real estate | 2002 |
| Luke's Locks Limited | Other services | 2008 |
| Lukhaya Limited | Health & social care | 2024 |
| Lukir Properties Limited | Real estate | 2008 |
| Lulu's Property Limited | Real estate | 2026 |
| Lulus Locks Ltd | Other services | 2023 |
| Lulu’S Retail Group Ltd | Wholesale & retail | 2025 |
| Lumina Viso Ltd | Other services | 2026 |
| Lunar Bespoke Limited | Construction | 2024 |
| Lunar Collectibles Ltd | Wholesale & retail | 2025 |
| Lunar Grips Ltd | Information & communication | 2014 |
| Luniq Limited | Information & communication | 2020 |
| Lupas Cleaning Services Ltd | Administrative & support | 2022 |
| Lush Nails & Beauty 80 Ltd | Other services | 2024 |
| Lutob Investment Ltd | Financial services | 2016 |
| Luvbiotics Limited | Wholesale & retail | 2020 |
| Luxaura Homes Limited | Real estate | 2024 |
| Luxe Construction Works Ltd | Construction | 2025 |
| Luxor Kitchens Limited | Manufacturing | 2016 |
| Luxury Airport Transfer Ltd | Construction | 2019 |
| Lymevale Developments Limited | Construction | 2002 |
| Lyndhurst Preparatory School Limited | Education | 2016 |
| Lyndhurst Residents Management RTM Company Ltd | Households | 2023 |
| Lyndhurst Road (South Ascot) Residents Association Limited | Professional & scientific | 1986 |
| Lynsey Colman Limited | Professional & scientific | 2023 |
| Lynwood Court (Mytchett) Management Company Limited | Administrative & support | 1987 |
| Lynxleap Ltd | Information & communication | 2024 |
| Lyons Holdings Limited | Professional & scientific | 1989 |
| LZ - QA Limited | Professional & scientific | 2019 |
| M and J Builds Limited | Construction | 2022 |
| M Dixit Consultancy Ltd | Information & communication | 2015 |
| M G Lawrence Painting Contractors Limited | Construction | 1998 |
| M K Bros Limited | Real estate | 2020 |
| M M Monaghan Properties Limited | Real estate | 2023 |
| M Mccarthy Limited | Construction | 1999 |
| M P Electrical & Property Services Ltd | Construction | 2015 |
| M S Nicholson Ltd | Construction | 2011 |
| M&A Automobiles Limited | Wholesale & retail | 2026 |
| M&P London Contractors Ltd | Construction | 2014 |
| M. Anderson Gardening Limited | Administrative & support | 2014 |
| M.A.E. Windows & Doors Ltd | Construction | 2015 |
| M.A.S Autos PD Ltd | Wholesale & retail | 2017 |
| M.A.S Building Ltd | Construction | 2017 |
| M.J.Bennett Properties Limited | Construction | 1960 |
| M2 Design Limited | Professional & scientific | 2004 |
| M3 Architectural Design Limited | Professional & scientific | 2014 |
| M3COMMERCIALS - Sell My Car - Sell My Van Ltd | Wholesale & retail | 2014 |
| MA Feltham Ltd | Hospitality | 2024 |
| MA Guildford 2 Ltd | Real estate | 2025 |
| MA Guildford Ltd. | Hospitality | 2017 |
| MA Hayes Ltd | Hospitality | 2021 |
| Maara's Signature Ltd | Hospitality | 2025 |
| MAC Design and Manufacture Limited | Administrative & support | 2025 |
| Mac's Automobile Service Limited | Wholesale & retail | 2020 |
| Macdonald Ryan Limited | Wholesale & retail | 2009 |
| Macey Silvera Property Management Ltd | Real estate | 2018 |
| Machers FM Limited | Households | 2025 |
| Machman Limited | Professional & scientific | 2017 |
| Macintyers Limited | Extraterritorial | 2003 |
| Mackenzie Consulting Ltd | Professional & scientific | 2022 |
| Macky Teas Ltd | Wholesale & retail | 2024 |
| Macrotech U.K. Limited | Wholesale & retail | 2016 |
| Madarling Limited | Education | 2015 |
| Madowl Games Ltd | Information & communication | 2016 |
| MAG Holistic Care Ltd | Health & social care | 2022 |
| Magenta Marine Limited | Professional & scientific | 2014 |
| Magna Insula Ltd | Other services | 2023 |
| Magnapro Limited | Arts & recreation | 2013 |
| Magnolia Computer Consultants Limited | Professional & scientific | 1998 |
| Magnova Consultancy Limited | Information & communication | 2015 |
| Mahkias Resources Limited | Manufacturing | 2024 |
| MAI Luxe Ltd | Wholesale & retail | 2026 |
| MAI Valley Construction Company Limited | Construction | 2011 |
| Mailafrica Limited | Transport & logistics | 1995 |
| Main Allen Property Consultancy Limited | Administrative & support | 2004 |