| Langmead Holding Company Limited | Financial services | 2019 |
| Langwell Paraplanning Ltd | Financial services | 2020 |
| Lansdale Building Limited | Construction | 2021 |
| Lara Trinder Bookkeeping Ltd | Professional & scientific | 2011 |
| Laser CUT and Fabrication Limited | Manufacturing | 2026 |
| Lash YOU Ltd | Other services | 2017 |
| Lasting Impressions (Devon) Limited | Manufacturing | 2004 |
| Latimer & SON General Builders Limited | Construction | 2015 |
| Laura Davison Property Limited | Real estate | 2020 |
| Laura Jennians Financial Planning Ltd | Professional & scientific | 2020 |
| Law Greedy Bags Ltd | Water & waste | 2021 |
| Law Green Recycling Limited | Water & waste | 2013 |
| Law Waste Services Ltd | Water & waste | 2012 |
| Lawrence James Construction Limited | Construction | 2025 |
| Lawrence Murphy Plumbing & Heating Ltd | Construction | 2023 |
| LB Training Ltd | Education | 2021 |
| LC Commercials Ltd | Real estate | 2021 |
| LC Restorations Ltd | Wholesale & retail | 2023 |
| LE Count Associates Ltd | Professional & scientific | 2011 |
| LE Cubs Ltd | Wholesale & retail | 2024 |
| Leap of Faith Adventures Ltd | Arts & recreation | 2014 |
| Learn 2 Motor Ltd | Extraterritorial | 2025 |
| Learning Academy Partnership (South West) | Education | 2011 |
| Leatfield Management Company Limited | Households | 2018 |
| Leatside Medical Services Limited | Health & social care | 2020 |
| LEB Consultancy Services Ltd | Professional & scientific | 2026 |
| LEE & Helen's Cleaning Services Ltd | Administrative & support | 2016 |
| LEE Accounting (South West) Limited | Professional & scientific | 2013 |
| LEE Clark Plastering Services Limited | Construction | 2021 |
| LEE M Johnson Limited | Health & social care | 2019 |
| LEE Mill Storage Ltd | Real estate | 2025 |
| Legacy Bay Ltd | Hospitality | 2024 |
| Legacy Property (SW) Ltd | Real estate | 2022 |
| Leggere Properties Limited | Construction | 2023 |
| Leigh-Firbank Consulting Ltd | Professional & scientific | 2024 |
| Lemon Jelli Bistro Ltd | Hospitality | 2017 |
| Leslie Kennedy | Agriculture & fishing | 2010 |
| Levels (SW) Ltd | Other services | 2023 |
| Lewis Chappell Developments Limited | Real estate | 2017 |
| Lewis College Ltd | Education | 2018 |
| Lewis Hudson Limited | Professional & scientific | 2017 |
| Lewtrenchard Manor Limited | Hospitality | 2011 |
| Lewydia Limited | Wholesale & retail | 2019 |
| Lexi Creative Ltd | Information & communication | 2025 |
| LEY Crescent Green Limited | Households | 2011 |
| LHB Accountancy Ltd | Professional & scientific | 2022 |
| LHS Devon Limited | Construction | 2025 |
| Liberty Landscapes Limited | Administrative & support | 2016 |
| Libra Partners Consulting Limited | Professional & scientific | 2022 |
| Life Oils UK Ltd | Health & social care | 2024 |
| Lifes Learning Ltd | Health & social care | 2021 |
| Lilacs Care Ltd | Health & social care | 2006 |
| Limb Organics Limited | Manufacturing | 2014 |
| Ling Ling House Limited | Hospitality | 2025 |
| Ling Ling Limited | Hospitality | 2023 |
| Linnitts Solicitors LLP | | 2009 |
| Lionheart Multimedia Limited | Information & communication | 2015 |
| Liquid Alpha Systems Limited | Manufacturing | 2019 |
| Liquid Solutions Ltd | Professional & scientific | 2007 |
| Liquidfinish (SW) Limited | Construction | 2019 |
| Lite Homes Ltd | Construction | 2007 |
| Little & Cull Ltd | Manufacturing | 2006 |
| Little BUD Flowers Limited | Wholesale & retail | 2017 |
| Little Orchard (Tavistock) Management Company Ltd | Households | 2024 |
| Little Pickles Play Village CIC | Health & social care | 2025 |
| Little Squirrels Pre-School Ltd | Education | 2021 |
| Little Woodland Property Limited | Construction | 2000 |
| Littlehayes Management Company Limited | Households | 2017 |
| Littlewood Family Lettings Ltd | Real estate | 2023 |
| Live Less Ordinary Limited | Real estate | 2024 |
| Liverton Mill Properties Ltd | Households | 2026 |
| Living Energy Systems Ltd | Wholesale & retail | 2009 |
| Livingstons Marine Ltd | Wholesale & retail | 2023 |
| Lizwell Farm Limited | Agriculture & fishing | 2008 |
| LJ (Copiers) Limited | Information & communication | 2008 |
| LK Accountancy Limited | Professional & scientific | 2013 |
| LKT Property Ltd | Real estate | 2017 |
| LL Transport and Plant Ltd | Construction | 2024 |
| Lloyd-Baker & Associates Limited | Professional & scientific | 2026 |
| Lloyds Electrical Contractors Ltd | Construction | 2009 |
| LM Finishes Ltd | Construction | 2025 |
| LM Property Development Limited | Construction | 2022 |
| LMS Homes Limited | Households | 2025 |
| Loach Holdings Limited | Construction | 2020 |
| Loach Limited | Professional & scientific | 2019 |
| Load 'O' Waffle Ltd | Hospitality | 2021 |
| Local First Community Interest Company | Professional & scientific | 2012 |
| Lock Tight Contractors Ltd | Construction | 2019 |
| Lodestone Energy Limited | Professional & scientific | 2019 |
| Loew Property Ltd | Real estate | 2021 |
| Logic Electrical & Fire Ltd | Construction | 2025 |
| Lola Gaskin Commercial Services Ltd | Professional & scientific | 2024 |
| Long Lane Farm Produce Limited | Hospitality | 2024 |
| Longcombe Shoot Limited | Arts & recreation | 2016 |
| Longhouse Farm Cottages Ltd | Hospitality | 2026 |
| Longston PH2 Open Space Management Limited | Households | 2025 |
| Longstone IT Limited | Information & communication | 2016 |
| Longwood Life CIC | Agriculture & fishing | 2026 |
| Longworth Industries Ltd | Professional & scientific | 2026 |
| Lookfactor Limited | Wholesale & retail | 2006 |