| Lichfield Local Taxis Ltd | Transport & logistics | 2024 |
| Lichi Limited | Administrative & support | 2008 |
| Liddy Solicitors EOT Limited | Financial services | 2025 |
| Liddys Solicitors Limited | Professional & scientific | 2010 |
| Life Haven Care Limited | Administrative & support | 2025 |
| Lift Tech Forklift Solutions Ltd | Manufacturing | 2024 |
| Lightable Projects Ltd | Professional & scientific | 2025 |
| Lighthouse Care Training and Consultation Ltd | Education | 2025 |
| Lighthouse Pathway Group Ltd | Real estate | 2023 |
| Lightning.Deco Ltd | Professional & scientific | 2026 |
| Lightowler Haulage Limited | Transport & logistics | 2014 |
| Lightwaves Community Trust | Arts & recreation | 2012 |
| Lightwood Road Retail Ltd | Wholesale & retail | 2025 |
| Like T.V. Limited | Information & communication | 2011 |
| LIL Industries Ltd | Professional & scientific | 2024 |
| Liley Food and Booze Ltd | Wholesale & retail | 2023 |
| Lily's Beauty Secrets Ltd | Other services | 2024 |
| Limitless Bespoke Ltd | Manufacturing | 2025 |
| Limitless ZIP Wires Limited | Manufacturing | 2020 |
| Linda Barbour Hair and Beauty Ltd | Other services | 2010 |
| Linda Lennon Limited | Wholesale & retail | 2017 |
| Lindale Management Services Limited | Administrative & support | 2025 |
| Lindens Health and Nutrition Limited | Manufacturing | 2007 |
| Lindsay Baxter Design Limited | Professional & scientific | 2009 |
| Lingwell Group Limited | Construction | 2018 |
| Link Leadership Ltd | Administrative & support | 2024 |
| Linksave Limited | Professional & scientific | 1983 |
| LINN24 Ltd | Professional & scientific | 2016 |
| Linntec Limited | Manufacturing | 2009 |
| Linzi's Little Gems Caring for Your Children Ltd | Health & social care | 2025 |
| Lion Administration Limited | Professional & scientific | 2014 |
| Lion Chap Holdings Limited | Financial services | 2024 |
| Lion Chap Property Investments Ltd | Real estate | 2026 |
| Lionix QA Ltd | Information & communication | 2025 |
| Lipiarski Limited | Transport & logistics | 2016 |
| Lipp Systems Ltd. | Manufacturing | 2013 |
| Liquid Gaming Limited | Wholesale & retail | 2014 |
| Lishal Holdings Limited | Real estate | 2019 |
| Lishmans Properties Limited | Real estate | 2020 |
| Lister Care Group Ltd | Health & social care | 2022 |
| Listers Smart Repairs UK Ltd | Wholesale & retail | 2023 |
| Littercam Limited | Information & communication | 2019 |
| Little Acorns Wrenthorpe Ltd | Education | 2023 |
| Little BAO BOY Ltd | Hospitality | 2021 |
| Little Ducklings Daycare Ltd | Health & social care | 2025 |
| Little Kiwi Company Ltd | Wholesale & retail | 2025 |
| Little Westgate Ltd | Real estate | 2025 |
| Little Wrens NPS Limited | Education | 2020 |
| Livalot Properties Limited | Real estate | 2020 |
| Live Show Entertainment Ltd | Information & communication | 2012 |
| Liverpool Quay Events Ltd | Extraterritorial | 2024 |
| Livesey Associates (Yorkshire) Limited | Professional & scientific | 2006 |
| Living Smarter Ltd | Construction | 2016 |
| Lixx Consult Limited | Information & communication | 2003 |
| LJB Services & Supplies Ltd | Wholesale & retail | 2009 |
| Ljbarrow Consultancy Ltd | Professional & scientific | 2022 |
| LJE Commercial Finance Limited | Financial services | 2017 |
| LJH Electrical Solutions Limited | Construction | 2019 |
| LJL Law Limited | Extraterritorial | 2008 |
| LJW Investments Ltd | Real estate | 2018 |
| LKM Developments Ltd | Construction | 2026 |
| LL Aurora Limited | Manufacturing | 2022 |
| LL Construction and Developments Ltd | Construction | 2025 |
| Lloyd Maunder Limited | Manufacturing | 1928 |
| LLT Services Limited | Education | 2018 |
| LM Properties Ltd | Real estate | 2019 |
| LM10 Ltd. | Financial services | 2004 |
| LM10 Property Ltd | Real estate | 2019 |
| LM21 Ltd | Information & communication | 2024 |
| LMP Properties Limited | Real estate | 2019 |
| Lmtless Ltd | Arts & recreation | 2026 |
| LO Group Limited | Real estate | 2020 |
| LO Investments Limited | Real estate | 2015 |
| Loaded Wardrobe Limited | Wholesale & retail | 2015 |
| Local GOV BI Ltd | Information & communication | 2019 |
| Local Honey MAN Ltd | Agriculture & fishing | 2013 |
| Local Plumbing Network Limited | Construction | 2018 |
| Local Store Wakefield Limited | Wholesale & retail | 2025 |
| Local Theatre Touring Alliance Limited | Arts & recreation | 2025 |
| Location Investments Ltd | Real estate | 2003 |
| Lochrie Property Investments Ltd | Real estate | 2025 |
| Lock and Barrel Security Solutions Ltd | Administrative & support | 2023 |
| Locksmithlocal Ltd | Administrative & support | 2024 |
| Locktex Ltd | Other services | 2007 |
| Lockwood Electrical Contractors Ltd | Construction | 2025 |
| Lockwood Grange Limited | Manufacturing | 2022 |
| Lockwood Sales & Maintenance Limited | Construction | 2020 |
| Lockwood Stores Retail Ltd | Wholesale & retail | 2019 |
| Lockyer Commercial Ltd | Financial services | 2016 |
| Lodestar Media Services Ltd | Information & communication | 2025 |
| Lofthouse Cars & Commercials Ltd | Wholesale & retail | 2021 |
| Lofthouse Fire & Protection Limited | Public administration | 2021 |
| Lofthouse Roofing & Supplies Ltd | Construction | 2020 |
| Lofthouse Roofing Supplies Ltd | Construction | 2016 |
| Lofthouse Security Systems Limited | Construction | 2005 |
| Logicflow Digital Ltd | Information & communication | 2024 |
| Logicor (CH) Limited | Manufacturing | 2012 |
| Logicor (FR) Limited | Manufacturing | 2012 |
| Logicor (IP1) Limited | Professional & scientific | 2020 |
| Logicor Financial Services Limited | Manufacturing | 2015 |