| L. & D. Mortimer Limited | Water & waste | 1989 |
| L.Mortimer(Bury)Limited | Real estate | 1964 |
| LA 2 Trading Ltd | Hospitality | 2025 |
| LA Lorraine UK Ltd. | Other services | 2011 |
| LA Paella Paella Ltd | Hospitality | 2024 |
| LA Pizza 4 Ltd | Hospitality | 2015 |
| LA Roca Limited | Administrative & support | 2013 |
| Labeeb Enterprises Ltd | Wholesale & retail | 2025 |
| Lactation Services Limited | Health & social care | 2016 |
| Lacy Days of Ramsbottom Limited | Wholesale & retail | 2023 |
| Ladeji Ltd | Hospitality | 2023 |
| Ladies in Business Ltd | Administrative & support | 2026 |
| Lady Kelvin Property Limited | Real estate | 2022 |
| Ladybird Nursery Ltd | Education | 2015 |
| LAH Healthcare Services Limited | Health & social care | 2023 |
| Lahori Karahi & Chargah Ltd | Hospitality | 2024 |
| Laigh Investments Limited | Financial services | 2021 |
| LAJ Estates Limited | Real estate | 2016 |
| LAJ Partnership LLP | | 2018 |
| LAJ Properties Ltd | Real estate | 2010 |
| Lajc Enterprises Limited | Real estate | 2019 |
| Lakeside Care Ltd | Health & social care | 2018 |
| Lakeside Collection Limited | Hospitality | 1993 |
| Lakeside Labour Limited | Information & communication | 2018 |
| Lakeside Lodge Company Limited | Extraterritorial | 2009 |
| Lakeside M&E Holdings Limited | Construction | 2022 |
| Lakeside Mechanical & Electrical Services Limited | Construction | 2009 |
| Lakewood Developments NW Ltd | Real estate | 2024 |
| Lakhanpauls Limited | Professional & scientific | 2017 |
| Lakin Builders Ltd | Construction | 2012 |
| Lambo Holdings Ltd | Real estate | 2026 |
| Lancashire Caravan Solutions Ltd | Manufacturing | 2023 |
| Lancashire Commercial Finance Limited | Financial services | 1980 |
| Lancashire Logistics Limited | Transport & logistics | 2026 |
| Lancashire Mortgage Corporation Limited | Extraterritorial | 2016 |
| Lancashire Pubs Ltd | Hospitality | 2021 |
| Lancashire Trade Frames Limited | Professional & scientific | 2007 |
| Lancashire Trade Vehicles Limited | Wholesale & retail | 1998 |
| Lancaster House Consulting & Diagnostic & Surgical Limited | Health & social care | 2005 |
| Land of Green Ginger Productions Ltd | Arts & recreation | 2025 |
| Land Reclamation Ltd | Real estate | 2020 |
| Landdev 01 Ltd | Real estate | 2025 |
| Landmark Landscape Management Limited | Water & waste | 1998 |
| Lane Photography Limited | Professional & scientific | 1999 |
| Language-Link International Limited | Administrative & support | 2016 |
| Lanwe Car Wash Ltd | Wholesale & retail | 2020 |
| Larewood Complete Building Services Limited | Construction | 2012 |
| Larino Estates Ltd | Real estate | 2025 |
| Lark Dance Studio Ltd | Administrative & support | 2018 |
| Laruptons Ltd | Administrative & support | 2018 |
| Lasani Trading Limited | Administrative & support | 2016 |
| Lasarte Fine Dining Ltd | Hospitality | 2025 |
| Laser YOU Bury Ltd | Wholesale & retail | 2026 |
| Laserlocation Limited | Other services | 2022 |
| Laserworld Engineering Co. Limited | Manufacturing | 1993 |
| Last Stop Events Ltd | Administrative & support | 2022 |
| Lateral Engineering Limited | Construction | 2001 |
| Latham Agriculture Ltd | Agriculture & fishing | 2021 |
| Latimer Legal Solicitors Limited | Professional & scientific | 2006 |
| Laughing Dove Ltd | Professional & scientific | 2015 |
| Laughing Staff Productions Ltd | Information & communication | 2024 |
| Launchpad Learning Limited | Education | 2014 |
| Laura Crossley Consulting Ltd | Professional & scientific | 2025 |
| Laura Preston Ltd | Real estate | 2023 |
| Lauren AMY Ltd | Other services | 2025 |
| Laurence a Goldberg Limited | Administrative & support | 2003 |
| Lava RIO Services Limited | Administrative & support | 2023 |
| Lavender UK Properties Ltd | Hospitality | 2021 |
| Lawforms Ltd | Information & communication | 2019 |
| Lawtons Travel Limited | Transport & logistics | 2020 |
| LB Systemz UK Limited | Wholesale & retail | 2016 |
| LCL Property Group Limited | Construction | 2024 |
| LCS Civils Limited | Construction | 2018 |
| LCS Kerbing and Paving Limited | Construction | 2021 |
| LCV Equity Ltd | Extraterritorial | 2007 |
| LD Swift Services Limited | Construction | 2023 |
| LE Fantôme Limited | Financial services | 2023 |
| LEA Hall Park Management Co Ltd | Households | 2004 |
| LEA Technical Design Services Ltd | Professional & scientific | 2023 |
| Lead Finesse Group Ltd. | Information & communication | 2025 |
| Lead on Purpose Ltd | Professional & scientific | 2026 |
| Leadx Group Limited | Professional & scientific | 2016 |
| Leadx Holdings Limited | Professional & scientific | 2007 |
| Leadx Limited | Financial services | 2005 |
| Leadx Marketing Limited | Administrative & support | 2007 |
| Leaf Properties (NW) Limited | Real estate | 2016 |
| Leagate Construction Limited | Construction | 2024 |
| Lean PM Ltd | Professional & scientific | 2007 |
| Learning Cubs Bury Ltd | Education | 2022 |
| Leasing International Ltd | Information & communication | 2013 |
| Leaver Holdings Limited | Financial services | 2020 |
| Leaver Investments Limited | Households | 2013 |
| LEC Bury Ltd | Administrative & support | 2024 |
| LED Lighting (NW) Ltd | Wholesale & retail | 2017 |
| LEE & Belvedere Ltd | Professional & scientific | 2024 |
| LEE & Lambert Limited | Real estate | 2021 |
| Lee's Amusements Ltd | Arts & recreation | 2015 |
| Lee's Property Limited | Real estate | 2022 |
| Leeram Ltd | Information & communication | 2023 |
| Leeroy Holmes Ltd | Real estate | 2021 |