| Long Mynd Homes Ltd | Real estate | 2016 |
| Longbow Developments Limited | Financial services | 2017 |
| Longbow Management Limited | Real estate | 2004 |
| Longden Holdings Limited | Financial services | 2018 |
| Longden Properties Limited | Real estate | 2002 |
| Longford Lane Management Company Limited | Households | 2001 |
| Longfords Mill (Management NO.2) Company Limited | Households | 2004 |
| Longfords Mill (Management NO.4) Company Limited | Households | 2006 |
| Longfords Mill (Management) Company Limited | Households | 2001 |
| Longholme Park Residents Management Company Limited | Households | 2022 |
| Longland Builders Limited | Wholesale & retail | 2008 |
| Longmynd Travel Limited | Transport & logistics | 2002 |
| Longner Bloodstock Limited | Agriculture & fishing | 2021 |
| Longner Developments Limited | Construction | 2022 |
| Longner Energy Limited | Energy | 2012 |
| Longnor Park Barns Management Limited | Households | 2009 |
| Lonjevity Functional Foods Ltd | Manufacturing | 2017 |
| Lonsdale (Shrewsbury) Limited | Construction | 2003 |
| Lontonn Ltd | Wholesale & retail | 2025 |
| Loopfest in the Community CIC | Arts & recreation | 2022 |
| Loopy Shrew Limited | Hospitality | 2015 |
| Loosemores (Kelowna Bears) Ltd | Professional & scientific | 2019 |
| Loosemores Trading Estate Ltd | Real estate | 2022 |
| Lord Hill Gardens (Management) Limited | Real estate | 2022 |
| Lord Ingress Estates Ltd | Real estate | 2021 |
| Lord Nelson Wellington Ltd | Real estate | 2025 |
| Lordstone Capital Ltd | Real estate | 2024 |
| Lordstone Holdings Ltd | Financial services | 2024 |
| Loretis Removals Ltd | Transport & logistics | 2024 |
| Lorton Estates Limited | Real estate | 2020 |
| LOS Norteños Ltd | Hospitality | 2024 |
| Lost Boulder Ltd | Real estate | 2018 |
| Lost Lands Limited | Arts & recreation | 2022 |
| Loton Advisory Ltd | Information & communication | 2025 |
| Loton Surveys Ltd | Agriculture & fishing | 2016 |
| Lourdes Gaspar Limited | Health & social care | 2018 |
| Lourence Hanna Limited | Health & social care | 2023 |
| Lourence Hanna Properties Limited | Real estate | 2023 |
| Love 2 Build (Shrewsbury) Limited | Construction | 2020 |
| Love Active CIC | Education | 2025 |
| Love and Beyond Co. Limited | Wholesale & retail | 2025 |
| Love at First Slice Ltd | Wholesale & retail | 2024 |
| Love Food Business Ltd | Wholesale & retail | 2018 |
| Love Play Active Ltd | Education | 2025 |
| Lovefoodcreative Ltd | Hospitality | 2017 |
| Lovelyland Limited | Agriculture & fishing | 2013 |
| Lovett & Co (Consulting) Limited | Professional & scientific | 2023 |
| Lovo Properties Ltd | Real estate | 2022 |
| Lowbridge Walk (29-39) RTM Company Limited | Households | 2022 |
| Lowbridge Walk (41-43) RTM Company Limited | Households | 2022 |
| Lowbridge Walk (Conversion) RTM Company Limited | Households | 2022 |
| Lower 48 Energy Limited | Professional & scientific | 1996 |
| Lower Shadymoor Farm Limited | Financial services | 2024 |
| Loxdale Sidings (Bilston) Management Limited | Households | 2004 |
| LR Donovan Property Limited | Real estate | 2024 |
| LS Branding Limited | Administrative & support | 2020 |
| LSD Art Limited | Real estate | 2012 |
| LSH Residential Cosec Limited | Administrative & support | 2006 |
| LSK Construction Services Limited | Construction | 2023 |
| LSM Venture Limited | Information & communication | 2011 |
| Lswj Ltd | Professional & scientific | 2020 |
| LT Barker Ltd | Professional & scientific | 2024 |
| LTL Timber Frame Erectors & Joiners Ltd | Construction | 2004 |
| Ltuk Innovations Limited | Information & communication | 2018 |
| Ludicra Limited | Information & communication | 2019 |
| Luke Black Ltd | Manufacturing | 2011 |
| Luke Heywood Associates Limited | Professional & scientific | 2015 |
| Luke O Brien Landscaping Ltd | Administrative & support | 2018 |
| Luke Walton Limited | Real estate | 2019 |
| Lulah Raine Limited | Other services | 2011 |
| Lumengin Ltd | Wholesale & retail | 2024 |
| Lumiere Consulting Ltd | Other services | 2010 |
| Lumsimamb Ltd | Health & social care | 2014 |
| Lunero Ltd | Wholesale & retail | 2025 |
| Lunexus Ltd | Wholesale & retail | 2025 |
| Lupolupo Limited | Hospitality | 2021 |
| Lurchello Limited | Administrative & support | 2011 |
| LUX Apps Ltd | Information & communication | 2021 |
| LUX Consulting Ltd | Professional & scientific | 2018 |
| Luxury Abodes Cornwall Ltd | Real estate | 2014 |
| Luxury Boltholes Limited | Real estate | 2017 |
| LW Sports and Custom Clothing Ltd | Other services | 2020 |
| LWM Property Limited | Real estate | 2021 |
| LWP Group (Shropshire) Ltd | Construction | 2021 |
| LWP Property Holdings Ltd | Real estate | 2026 |
| Lycian Consulting Ltd | Professional & scientific | 2017 |
| Lyfelinez Ltd | Manufacturing | 2021 |
| Lyme Tree Developments Limited | Construction | 2023 |
| Lymehurst Place Management Company Limited | Households | 2026 |
| Lyne Hill (Flats) Management Company Limited | Real estate | 2018 |
| Lyne Hill Penkridge Management Company Limited | Real estate | 2016 |
| Lyneal Group EOT Limited | Financial services | 2022 |
| Lyneal Group Ltd | Financial services | 2018 |
| Lynher Lodge Management Limited | Households | 2000 |
| Lynx Holdings Limited | Financial services | 2019 |
| Lynx Property Ltd | Real estate | 2024 |
| Lyon Ventures Ltd | Administrative & support | 2021 |
| Lyonesse Lane Residents Association Ltd | Real estate | 2020 |
| Lyons Lane Motocross Ltd | Arts & recreation | 2019 |
| Lyons Lane Properties Ltd | Real estate | 2025 |