| Lipstick Gangster Ltd | Other services | 2018 |
| Lipstick Limited | Information & communication | 2017 |
| Liquid Craft Global Limited | Professional & scientific | 2022 |
| Liquor and Vape Hub Ltd | Wholesale & retail | 2023 |
| LIS Construction Ltd | Construction | 2017 |
| Lisa Ellis Solicitors Ltd | Professional & scientific | 2020 |
| Lisle ST. Ledger Developments Ltd | Wholesale & retail | 2006 |
| Lissco Group Ltd | Financial services | 2025 |
| Lissco Ltd | Wholesale & retail | 2020 |
| Listen OUT Productions Ltd | Information & communication | 2025 |
| Lister Power Co Ltd | Manufacturing | 2023 |
| LIT Gifts Ltd | Wholesale & retail | 2019 |
| Lite IP Limited | Manufacturing | 2012 |
| Lite Project Ltd | Information & communication | 2014 |
| Litework Technologies Limited | Information & communication | 2026 |
| Litexpo Ltd | Construction | 2014 |
| Lithend Estates Limited | Real estate | 2017 |
| Lithos Carbon Holdings Ltd | Real estate | 2025 |
| Litlington Court (Seaford) RTM Limited | Households | 2008 |
| Litmanen Holdings Ltd | Real estate | 2026 |
| Litmus Healthcare Services Limited | Health & social care | 2023 |
| Litrus Marine Engineering Ltd | Manufacturing | 2025 |
| Litrus Marine Fabrications Limited | Manufacturing | 2009 |
| Little Bear Bookkeeping Ltd | Professional & scientific | 2025 |
| Little Big Village Ltd | Arts & recreation | 2019 |
| Little Brook Homes Ltd | Real estate | 2025 |
| Little Bull Property Management Ltd | Real estate | 2021 |
| Little Canton Restaurant and Bar Ltd | Hospitality | 2024 |
| Little Crumpets Photography Ltd | Arts & recreation | 2023 |
| Little Dale Dogs Limited | Agriculture & fishing | 2026 |
| Little Digital Marketing Limited | Professional & scientific | 2019 |
| Little Explorers Sensory Ltd | Other services | 2026 |
| Little Gardners Nursery Ltd | Education | 2012 |
| Little Hair Co Ltd | Other services | 2019 |
| Little HOE Barns Residents Limited | Households | 2006 |
| Little Indian Bazaar Ltd | Wholesale & retail | 2018 |
| Little Miss TOW Away Ltd | Transport & logistics | 2026 |
| Little Mountains Nursery Ltd | Health & social care | 2025 |
| Little Nest Childcare Ltd | Education | 2024 |
| Little River Management Limited | Agriculture & fishing | 2010 |
| Little Rock Estates Limited | Financial services | 2021 |
| Little Shipmates Group Limited | Other services | 2003 |
| Little Starts Gift Vouchers Limited | Other services | 2018 |
| Little West END Farm Limited | Agriculture & fishing | 2025 |
| Little White Vans Ltd | Wholesale & retail | 2024 |
| Little Wooden Wonders Limited | Administrative & support | 2020 |
| Littlebit ( Soton ) Limited | Professional & scientific | 2024 |
| Littlecroft (Northlands Road) Limited | Households | 1982 |
| Littlemeads Investments Limited | Construction | 2021 |
| Littleprints Wallart Ltd | Wholesale & retail | 2015 |
| Livatiz Ltd | Transport & logistics | 2021 |
| Live Lean Business Limited | Education | 2023 |
| Live Room Audio Ltd | Information & communication | 2024 |
| Live TOO Limited | Health & social care | 2011 |
| Lived 9 Lives Kustoms Limited | Wholesale & retail | 2020 |
| Liveland Limited | Real estate | 1993 |
| Livemine Limited | Professional & scientific | 1989 |
| Liver Nest Limited | Real estate | 2022 |
| Livesavers Limited | Manufacturing | 2014 |
| Livewire Tyres Limited | Wholesale & retail | 2011 |
| Livexpresdelivery Ltd | Transport & logistics | 2022 |
| Living Art Limited | Hospitality | 2008 |
| Living Changes Limited | Health & social care | 2010 |
| Living Heritage School Ltd | Health & social care | 2025 |
| Living Necessities Ltd | Wholesale & retail | 2025 |
| Living Waters Plumbing and Heating Ltd | Construction | 2021 |
| Living Yoga Training & Development Limited | Education | 2020 |
| Livism Properties Ltd | Real estate | 2022 |
| Livity Life Limited | Wholesale & retail | 2022 |
| Liviumery Logistic Ltd | Transport & logistics | 2021 |
| Livsstil Ltd | Other services | 2017 |
| LIZ Maisels Limited | Health & social care | 2022 |
| LIZ Morris Associates Ltd | Professional & scientific | 2011 |
| LJ Composites Ltd | Manufacturing | 2018 |
| LJ Construction Southern Ltd | Construction | 2022 |
| LJA Construction Ltd | Construction | 2010 |
| LJD Rope Access Ltd | Mining & quarrying | 2024 |
| LJH Building Services Ltd | Construction | 2022 |
| Ljhenry Consultants Ltd | Professional & scientific | 2010 |
| LJJ Transports Limited | Transport & logistics | 2021 |
| LJL Educational Consultancy Ltd | Education | 2012 |
| LJL Parchment Limited | Hospitality | 2023 |
| LJL Rail Services Limited | Manufacturing | 2017 |
| LK Deco Ltd | Construction | 2014 |
| LK Forecourt Limited | Wholesale & retail | 2021 |
| LK Image Rights Limited | Administrative & support | 2026 |
| LKB Aesthetics Limited | Other services | 2023 |
| Lkdl Ltd | Transport & logistics | 2019 |
| LKJ Enterprises Ltd | Households | 2019 |
| LKK Trans Ltd | Transport & logistics | 2020 |
| LKW Driving Limited | Transport & logistics | 2015 |
| LL Financial Ltd | Financial services | 2021 |
| LL Global Education Consulting Ltd | Education | 2023 |
| Llanbury Consulting Limited | Professional & scientific | 2012 |
| LLC Plumbing & Heating Ltd | Construction | 2020 |
| LLE Distribution Ltd | Wholesale & retail | 2024 |
| LLH Trading Ltd | Hospitality | 2016 |
| LLJ Enterprises Ltd | Hospitality | 2022 |
| LLM Southampton Ltd | Professional & scientific | 2022 |
| Lloyd Estates Limited | Real estate | 2014 |