| Livewest Properties Limited | Real estate | 2016 |
| Livewest Services Limited | Construction | 2007 |
| Livewest Treasury PLC | Financial services | 2007 |
| Living Flow Limited | Real estate | 2024 |
| Livingshayes Barns Management Company Limited | Households | 2017 |
| Livingston Solutions Limited | Information & communication | 2013 |
| LJ Aviation Limited | Manufacturing | 2026 |
| Lj's Driver Training Ltd | Education | 2022 |
| LJC Automotive Ltd | Wholesale & retail | 2024 |
| LJR Property Investments Limited | Real estate | 2023 |
| Lkca Limited | Professional & scientific | 2008 |
| LKM Logistics Limited | Transport & logistics | 2017 |
| LL & G Consulting Ltd | Professional & scientific | 2021 |
| LLC Events Ltd | Arts & recreation | 2021 |
| Llexeter Enterprises Limited | Financial services | 2025 |
| Lloyds Gym Ltd | Arts & recreation | 2024 |
| Lloyds Incorporated Ltd | Real estate | 2024 |
| Lloyds Lettings Inc. Ltd | Households | 2021 |
| LMD Builders Ltd | Construction | 2024 |
| LME Projects Ltd | Arts & recreation | 2026 |
| LNF Management Ltd | Other services | 2018 |
| LNI Consulting Ltd | Arts & recreation | 2025 |
| LNL Capital Ltd | Real estate | 2023 |
| LNL Green Ltd | Real estate | 2024 |
| LNL Light Homes Limited | Real estate | 2024 |
| Lobster POT (Newquay) Limited | Real estate | 2006 |
| Local Investment Ltd | Construction | 2017 |
| Local Roots Hospitality Ltd | Hospitality | 2025 |
| Local Roots Kitchen Ltd | Manufacturing | 2025 |
| Lock & Store Limited | Real estate | 2016 |
| Lockhart Recruitment Ltd | Administrative & support | 2025 |
| Lockrite Autolocksmiths Ltd | Wholesale & retail | 2019 |
| Lockrite Locksmiths Ltd | Wholesale & retail | 2007 |
| Locksley Education Ltd | Education | 2017 |
| Locoptical Limited | Health & social care | 2022 |
| Locum Service Ltd | Health & social care | 2013 |
| Locusxact Limited | Information & communication | 2021 |
| Loft Club Management Company Limited | Real estate | 2015 |
| Logan Risk Ltd | Professional & scientific | 2020 |
| Logan Rock Consulting Training & Coaching Ltd | Professional & scientific | 2024 |
| Logical Mortgages Limited | Financial services | 2020 |
| Logistics Mario Ltd | Transport & logistics | 2025 |
| Lokomco Ltd | Wholesale & retail | 2020 |
| Lollipop Lettings Ltd | Real estate | 2019 |
| Lombardi Heating Ltd | Construction | 2021 |
| London Back Pain Clinic Ltd | Extraterritorial | 2015 |
| London Screw Piling Specialist Ltd | Construction | 2024 |
| Lone Eagle Estates Limited | Real estate | 2002 |
| Lone Eagle Properties Limited | Real estate | 2002 |
| Lone Eagle Securities Limited | Real estate | 2003 |
| Lone Star BBQ Ltd | Hospitality | 2025 |
| Long (Holdings) Limited | Real estate | 2012 |
| Longburton Barns Management Company Limited | Households | 2025 |
| Longevity Development Holdings Limited | Professional & scientific | 2016 |
| Longfish Leisure UK Ltd | Wholesale & retail | 2021 |
| Longhouse Devon Limited | Construction | 1998 |
| Longmead Country Escapes Limited | Real estate | 2018 |
| Longplayer UK Limited | Wholesale & retail | 2023 |
| Longwool Barn Management Company Limited | Real estate | 2021 |
| Lono Drinks Limited | Wholesale & retail | 2016 |
| LOR ROW Ltd | Administrative & support | 2018 |
| Loram View Limited | Administrative & support | 2010 |
| Lords Advisory Limited | Professional & scientific | 2026 |
| Lords Hospitality Consultancy Limited | Professional & scientific | 2026 |
| Lorna Ruby Clothing Ltd | Wholesale & retail | 2012 |
| Losa Properties Ltd | Real estate | 2025 |
| Losan Limited | Real estate | 2000 |
| Lotal Products Limited | Wholesale & retail | 2020 |
| Lotus Surgical Limited | Health & social care | 2016 |
| Loud Mouth Ltd | Wholesale & retail | 2015 |
| Louis Thirteen Group Limited | Wholesale & retail | 2019 |
| Louise Luxe Limited | Information & communication | 2026 |
| Louismann (U.K.) Limited | Administrative & support | 2024 |
| Loumo Design Ltd | Professional & scientific | 2026 |
| Love Accountancy Limited | Professional & scientific | 2015 |
| Love ADS Ltd | Professional & scientific | 2025 |
| Love and Bass Ltd | Arts & recreation | 2025 |
| Love Fields Glastonbury Limited | Other services | 2010 |
| Love Fields Limited | Administrative & support | 2017 |
| Love ST Thomas CIC | Other services | 2025 |
| Love Topsham Community Interest Company | Other services | 2019 |
| Love Windows Devon Ltd | Construction | 2018 |
| Lovebestofbritish Ltd | Wholesale & retail | 2011 |
| Lovedayjnr Ltd | Wholesale & retail | 2021 |
| Loveet Homes Limited | Households | 2024 |
| Lovelace Holdings Ltd | Financial services | 2021 |
| Loveridge Developments & Contractors Limited | Construction | 2003 |
| LOW Carbon Estates Ltd | Professional & scientific | 2019 |
| LOW Carbon Expert Limited | Professional & scientific | 2010 |
| LOW Carbon Foundation | Financial services | 2014 |
| LOW Carbon Group Limited | Energy | 2011 |
| LOW Carbon Oxygen Limited | Financial services | 2015 |
| LOW Carbon Rooftops Limited | Energy | 2017 |
| LOW Carbon Solar Finance Limited | Financial services | 2012 |
| LOW Carbon Technologies Limited | Professional & scientific | 2026 |
| LOW Carbon Ventures Limited | Energy | 2011 |
| Lowday Pring Holdings Ltd | Financial services | 2019 |
| Lowen Consulting Ltd | Information & communication | 2025 |
| Lower Hill Recruitment & Consultancy Limited | Administrative & support | 2006 |
| Lower Woodhayes Court Residents Association Limited | Households | 1991 |