| Lmsd Ltd | Transport & logistics | 2024 |
| Lmtlss Limited | Wholesale & retail | 2025 |
| LNN Business Ltd | Real estate | 2026 |
| Local Rock Ltd | Information & communication | 2016 |
| Loch Property Group Ltd | Real estate | 2026 |
| Lochab Care Limited | Health & social care | 2025 |
| Locked OUT Rescue Ltd | Other services | 2026 |
| Lockwood Property Ltd | Real estate | 2019 |
| Lofthouse Electrical Ltd | Construction | 2021 |
| Logibuild Limited | Construction | 2024 |
| Logical Storage Solutions Limited | Administrative & support | 2011 |
| Logical Storage Systems Limited | Real estate | 2015 |
| Logistixnet Limited | Transport & logistics | 2021 |
| Lola Properties Midlands Limited | Real estate | 2022 |
| Lola RAE Fashion Limited | Wholesale & retail | 2020 |
| Lombardelli Trading Limited | Wholesale & retail | 2012 |
| London Hands Limited | Other services | 2012 |
| London Handyman 247 LLP | | 2015 |
| Longshoot Estates Management Ltd | Real estate | 2023 |
| Loomy Escapes Ltd | Hospitality | 2020 |
| Lorena Lorena Ltd | Health & social care | 2019 |
| Lorena O'Connor Limited | Health & social care | 2024 |
| Lorgat School of Motoring Limited | Education | 2025 |
| Lorraf Express Ltd | Transport & logistics | 2024 |
| LOS Endos Ltd | Mining & quarrying | 2022 |
| Lost World Demolition Limited | Construction | 2024 |
| LOT Developments Ltd | Real estate | 2026 |
| Lote Tree Ltd | Real estate | 2009 |
| Lotte's Cottage Limited | Real estate | 2021 |
| Loudon Co-Operation Property Limited | Professional & scientific | 2015 |
| Loudon Cooperation Limited | Other services | 2011 |
| Louelo Associates Ltd | Arts & recreation | 2019 |
| Louise Dunn Consultancy Ltd | Health & social care | 2024 |
| Love Rain Fashion Ltd | Wholesale & retail | 2023 |
| Love the Bed.Com Limited | Wholesale & retail | 2015 |
| LOVE2FOSTER Ltd | Health & social care | 2023 |
| Loveys Emporium Ltd | Wholesale & retail | 2025 |
| Lovitt Embroidery Ltd | Manufacturing | 2016 |
| Loxley Motor Group Ltd | Wholesale & retail | 2025 |
| LP Law (Family) Ltd | Professional & scientific | 2020 |
| LP SD Fifty SIX Limited | Wholesale & retail | 2023 |
| LP Systems Limited | Administrative & support | 2017 |
| LRS Carpentry & Construction Ltd | Construction | 2021 |
| Lrtrading Ltd | Wholesale & retail | 2026 |
| LS Supplements Ltd | Wholesale & retail | 2024 |
| LS27 Investments Limited | Financial services | 2025 |
| LSL Global Limited | Professional & scientific | 2017 |
| LSO Installations Ltd | Construction | 2022 |
| Lstrans Ltd | Transport & logistics | 2025 |
| LTI Wealth Management Ltd | Financial services | 2014 |
| Lucas Holding Group Ltd | Financial services | 2025 |
| Lucia Cortes Clinic Limited | Other services | 2021 |
| Lucian-Daniel Miron Ltd | Transport & logistics | 2017 |
| Lucianspeed Limited | Transport & logistics | 2024 |
| Lucky Break Nuneaton Limited | Hospitality | 2023 |
| Lucky Jewellery Private Limited | Wholesale & retail | 2024 |
| Luckyroad Ltd | Transport & logistics | 2025 |
| Lucy Henson Clark Ltd | Professional & scientific | 2021 |
| Lucyd Clothing Limited | Wholesale & retail | 2012 |
| Luey Ltd | Wholesale & retail | 2021 |
| Luisa Montaldo Limited | Health & social care | 2012 |
| Lukastechnologies Ltd | Information & communication | 2025 |
| Lukasz & Anna Ltd | Other services | 2017 |
| Luke East Hair Limited | Other services | 2024 |
| Lumen Academy Ltd | Education | 2024 |
| Luminosity Group Limited | Manufacturing | 2018 |
| Lunar Aesthetics (Nuneaton) Limited | Other services | 2024 |
| Lunaria Linen Ltd. | Wholesale & retail | 2025 |
| Luntraru Ltd | Transport & logistics | 2022 |
| Lushima Ltd | Wholesale & retail | 2020 |
| Lusia World Props Ltd | Manufacturing | 2023 |
| LUTHER2000 Ltd | Transport & logistics | 2022 |
| Lutterworth Property Company Limited | Real estate | 2025 |
| LUX Distribution Ltd | Wholesale & retail | 2014 |
| LUX Engineering Limited | Information & communication | 2018 |
| LUX Manufacturing Ltd | Manufacturing | 2016 |
| Luxe Franchising Ltd | Administrative & support | 2025 |
| Luxe Ltd | Wholesale & retail | 2023 |
| Luxeshine Ltd | Construction | 2026 |
| Luxury Property Ltd | Real estate | 2021 |
| Luxuryff Limited | Wholesale & retail | 2023 |
| Luxurysf Limited | Other services | 2023 |
| Lwma Transport Ltd | Transport & logistics | 2025 |
| LXV Ltd | Administrative & support | 2012 |
| Lymanuel Ltd | Real estate | 2022 |
| Lynno Consult Ltd | Health & social care | 2022 |
| Lyson Architecture Limited | Professional & scientific | 2016 |
| M & B Land Holdings Limited | Financial services | 2020 |
| M B K a Investments Limited | Real estate | 2019 |
| M B Solutions Midlands Limited | Transport & logistics | 2023 |
| M Barnes Construction Limited | Construction | 2015 |
| M Bewell Consultants Limited | Arts & recreation | 2016 |
| M Center Ltd | Information & communication | 2025 |
| M Clingo Farrier Limited | Agriculture & fishing | 2017 |
| M G Parsons and Company Limited | Professional & scientific | 2022 |
| M I Taxis Limited | Transport & logistics | 2016 |
| M J Services (Midlands) Limited | Transport & logistics | 2019 |
| M K Civils Limited | Construction | 2024 |
| M Ltd | Manufacturing | 2020 |
| M M Carriers Limited | Transport & logistics | 2006 |