| Lane Court (Somersham) Management Company 2000 Limited | Households | 2000 |
| Lane Education Limited | Education | 2020 |
| Langford Lettings Limited | Real estate | 2009 |
| Lanham Place Residents Association Limited | Real estate | 1982 |
| Large Actor Limited | Arts & recreation | 2023 |
| Larnook Limited | Other services | 2018 |
| Laughing Nettle Limited | Information & communication | 2025 |
| Laundry Place (Maldon) Ltd | Other services | 2025 |
| Laundry Place Ltd | Other services | 2024 |
| Laura Hayter Coaching Ltd | Education | 2022 |
| Law Costs Drafting Limited | Professional & scientific | 2003 |
| Law Fire Solutions Ltd | Public administration | 2025 |
| Lawn Doctor (Essex) Ltd | Administrative & support | 2019 |
| Lazy Dayz Letting Limited | Real estate | 2025 |
| LBO Corporation Limited | Financial services | 2020 |
| LE Bouchon Hotel Limited | Hospitality | 2011 |
| LE Domestique Limited | Administrative & support | 2011 |
| Leah Homecare Ltd | Health & social care | 2021 |
| Leam Bakers Contract Services Limited | Administrative & support | 2026 |
| Leam Bakers Tree Services Limited | Administrative & support | 2026 |
| Leanne Allcock-Mead Solicitors Ltd | Professional & scientific | 2018 |
| Learning Skills Solutions Limited | Education | 2018 |
| LEE Billing Joinery Limited | Construction | 2011 |
| LEE Middleton Plumbing & Heating Limited | Construction | 2015 |
| LEE Plumbing Services Ltd | Construction | 2016 |
| Legacy Care (Developments & Acquisitions) Ltd | Health & social care | 2016 |
| Legacy Care Plus Ltd | Administrative & support | 2018 |
| Legacy Park Developments Limited | Construction | 2020 |
| Lehan Group Limited | Professional & scientific | 2023 |
| Leisure Groundworks and Maintenance Limited | Construction | 2026 |
| Lepine Group Holdings Limited | Financial services | 2021 |
| Lepine Investments Limited | Real estate | 2020 |
| Lepine Properties Limited | Real estate | 2015 |
| Lets GET on With IT Ltd | Professional & scientific | 2020 |
| Leys Avenue Flat Management Company Limited | Real estate | 1998 |
| Leys Avenue Residents Association Limited | Real estate | 1998 |
| LGJ Business Consulting Ltd | Professional & scientific | 2017 |
| Liac Care Services Ltd | Health & social care | 2024 |
| Liaoning Mingxing Law Consulting Limited | Administrative & support | 2020 |
| Libran Laminations Limited | Manufacturing | 1994 |
| Life Electrical Ltd | Construction | 2018 |
| Life Wealth Management Ltd | Financial services | 2021 |
| Light & Shade (Maldon) Limited | Wholesale & retail | 2016 |
| Lighthouse (59-63 Market Hill, Maldon) Limited | Households | 2004 |
| Lilliepad Limited | Real estate | 2020 |
| Lily Finance Limited | Administrative & support | 2016 |
| Lilycrom Services Limited | Health & social care | 2021 |
| Lime Quay Management Limited | Households | 2013 |
| Lincargo Ltd | Transport & logistics | 2025 |
| Lineout (UK) Ltd | Transport & logistics | 2007 |
| Lings&Co Ltd | Real estate | 2024 |
| Lioena Limited | Extraterritorial | 2017 |
| Lion Seeds Limited | Agriculture & fishing | 1989 |
| Liquid Logistix Limited | Transport & logistics | 2021 |
| Lite Build Ltd | Construction | 2021 |
| Litefoods Ltd | Hospitality | 2021 |
| Little Lolls Boutique Ltd | Wholesale & retail | 2021 |
| Little Peeps Nursery Limited | Education | 2003 |
| Little Rascals Day Nursery Ltd | Education | 2020 |
| Little Scrummers Rugby Limited | Arts & recreation | 2009 |
| Little Smilers Limited | Arts & recreation | 2007 |
| Little Wings & Wonders C.I.C. | Education | 2026 |
| Live Aurora Network Limited | Administrative & support | 2018 |
| Livewire Properties Limited | Professional & scientific | 2004 |
| Living Food Limited | Hospitality | 2026 |
| Lizzy Grey Ltd | Wholesale & retail | 2020 |
| Ljbac Limited | Professional & scientific | 2018 |
| Ljmr Consulting Limited | Professional & scientific | 2026 |
| Ljss Ltd. | Professional & scientific | 2012 |
| LM Build and Landscape Limited | Construction | 2020 |
| LMA Property Consultants Limited | Professional & scientific | 2013 |
| LMC3 Ltd | Real estate | 2025 |
| Lmdekock Limited | Health & social care | 2018 |
| Lockey Limited | Administrative & support | 2022 |
| Lodge Holdings (Essex) Ltd | Financial services | 2025 |
| Lodge Properties (Essex) Ltd | Real estate | 2012 |
| Lodge’S Grabs Limited | Water & waste | 2017 |
| Loft Ladders (Essex) Ltd | Construction | 2015 |
| Loft Ladders Herts Ltd | Construction | 2023 |
| Logan Property & Marine Ltd | Real estate | 2020 |
| London Bulls Limited | Real estate | 2018 |
| London Environmental Group Services Limited | Administrative & support | 2003 |
| London Environmental Limited | Health & social care | 2015 |
| London Global Connections Ltd | Professional & scientific | 2019 |
| Loonies Group Holding Limited | Financial services | 2022 |
| Lopes Auto Repairs Ltd | Wholesale & retail | 2024 |
| Louper Management Limited | Administrative & support | 2026 |
| Love 2 Wire Limited | Construction | 2023 |
| Love Huts Ltd | Hospitality | 2025 |
| Love My Cleaner Chelmsford Ltd | Administrative & support | 2025 |
| Love My Cleaner Maldon Ltd | Administrative & support | 2022 |
| Lower Farm Upend Ltd | Real estate | 2025 |
| LPC Consultancy Ltd | Professional & scientific | 2023 |
| LPH Accounts Management Ltd | Professional & scientific | 2021 |
| LSH Holdings Limited | Financial services | 2025 |
| LTS Digital Limited | Information & communication | 2021 |
| Lucas Carpentry Limited | Construction | 2025 |
| Lucas Jacob Ltd | Manufacturing | 2019 |
| Lucas Jacob Properties Ltd | Real estate | 2020 |
| Luckee Ltd | Extraterritorial | 2025 |