| LA Teja Properties UK Limited | Real estate | 2024 |
| La-Vintage Limited | Wholesale & retail | 2012 |
| Labelchase Limited | Manufacturing | 2025 |
| Labstep Limited | Information & communication | 2013 |
| Ladybird Private Day Nurseries Ltd | Health & social care | 2013 |
| Lagom Advisory Limited | Professional & scientific | 2021 |
| Lakeside Lodge Lettings Ltd | Real estate | 2025 |
| Lakeside Needlecraft Limited | Wholesale & retail | 2018 |
| Lamaload Limited | Construction | 2020 |
| Lamlos Ltd | Real estate | 2025 |
| Lancet Homes Limited | Construction | 2014 |
| Landin Health & Fitness Ltd | Arts & recreation | 2025 |
| Landmark Realty Group Limited | Construction | 2022 |
| Landr Freight Forwarding Limited | Transport & logistics | 2020 |
| Lantern Post Production Ltd | Information & communication | 2014 |
| Lapico Ventures Limited | Professional & scientific | 2023 |
| Lara & ALI Ltd | Real estate | 2026 |
| Large Hospitality Normanhurst Ltd | Real estate | 2024 |
| Laserina Ltd | Other services | 2005 |
| Lathen Ltd | Real estate | 2018 |
| Latitude 34 Ltd | Financial services | 2020 |
| Laughletdie UK Ltd | Arts & recreation | 2024 |
| Lauren S Jackson Ltd | Other services | 2022 |
| Lavelle Developments Ltd. | Real estate | 2003 |
| Lawton Hathaway Ltd | Administrative & support | 2009 |
| Lawyers Medical Agency LLP | | 2015 |
| Lawyers Rehabilitation Services Limited | Health & social care | 2013 |
| Lazyboy Trading Limited | Hospitality | 1999 |
| LC Operations Ltd | Professional & scientific | 2025 |
| LCS (NW) Limited | Administrative & support | 2021 |
| LD Property Collective Ltd | Real estate | 2025 |
| LDA Manchester Ltd | Other services | 2021 |
| Leadprila Ltd | Professional & scientific | 2024 |
| Lean Design and Build Limited | Construction | 2018 |
| Leaping Water Limited | Professional & scientific | 2024 |
| Leapling Films Limited | Information & communication | 2012 |
| Learn for Care Ltd | Education | 2024 |
| Learningblock Ltd | Information & communication | 2026 |
| Learnthoroughly Ltd | Extraterritorial | 2021 |
| Leashon Ltd | Professional & scientific | 2022 |
| Leavitt Walmsley Associates Ltd | Professional & scientific | 1995 |
| Leconfield Court Management Company Limited(The) | Households | 1981 |
| Lees Hall Trading Ltd | Wholesale & retail | 2024 |
| Legal Eagle Ltd | Other services | 2024 |
| Lehmanns Books Limited | Wholesale & retail | 2019 |
| Leigh Arms (Cheshire) Ltd | Hospitality | 2010 |
| Leisure Design and Build (KIO) Limited | Professional & scientific | 2025 |
| Lemur Labels Ltd | Wholesale & retail | 2014 |
| LENGTH2LENGTH Hair Extensions Ltd | Wholesale & retail | 2019 |
| LEO Performance Limited | Professional & scientific | 2026 |
| Leo-Tech Solutions Limited | Professional & scientific | 2017 |
| Lets Play (NW) Limited | Administrative & support | 2002 |
| Leuo Limited | Wholesale & retail | 2019 |
| LEV Investment Limited | Real estate | 2020 |
| Level UP Communities CIC | Education | 2024 |
| Lexan Building Services Ltd | Construction | 2025 |
| LF Barn Limited | Hospitality | 2020 |
| LFB Holdings Limited | Professional & scientific | 2015 |
| LG Paving & Landscape Design Ltd | Construction | 2021 |
| LGK Investments Limited | Real estate | 2020 |
| LGK Sale Limited | Construction | 2012 |
| LGM Automotive Group Limited | Wholesale & retail | 2026 |
| LH H Barn Limited | Construction | 2020 |
| LH Realisations Ltd | Health & social care | 2014 |
| LHR & Partners Ltd | Real estate | 2021 |
| Liberty Family Homes Limited | Real estate | 2024 |
| Life Cycle International C.I.C. | Health & social care | 2025 |
| Life Fantastic Limited | Real estate | 2022 |
| Life of Riley Medical Aesthetics Ltd | Other services | 2023 |
| Lifecentre Events Limited | Hospitality | 2012 |
| Lifechurch Manchester | Other services | 2005 |
| Light Aircraft Avionics Limited | Transport & logistics | 2008 |
| Light of Hope C.I.C. | Education | 2003 |
| Light Tunnel Limited | Construction | 2024 |
| Light UP Vision Ltd | Professional & scientific | 2025 |
| Light Wholesales Ltd | Wholesale & retail | 2025 |
| Lightening Camera Limited | Information & communication | 2003 |
| Lighthouse Hotel Management Limited | Professional & scientific | 2020 |
| Lighthouse SCS Ltd | Professional & scientific | 2023 |
| Lightrx Holding Ltd | Financial services | 2025 |
| Lightrx Ltd | Financial services | 2025 |
| Lignum Resources Limited | Professional & scientific | 2017 |
| Ligotech Ltd | Information & communication | 2018 |
| Lihoutech Limited | Professional & scientific | 2007 |
| Lime Dice Limited | Professional & scientific | 2019 |
| Limestone Construction Ltd | Construction | 2020 |
| Linar Clothing Limited | Wholesale & retail | 2020 |
| Linden LEA, M33 (RTM) Ltd | Households | 2025 |
| Lindow Court Management Limited | Households | 1971 |
| Lindsey Alexander Management Accounting Ltd | Professional & scientific | 2025 |
| Linear Light Company Limited | Wholesale & retail | 1990 |
| Linerose Ltd | Wholesale & retail | 2024 |
| Lingfield RTM Company Limited | Households | 2010 |
| Linthorpe Interiors Limited | Wholesale & retail | 2012 |
| Lion Rise Property Management Limited | Real estate | 2021 |
| Lion Rock Estates Limited | Real estate | 2020 |
| Lion Rock Properties (London) Ltd | Households | 2021 |
| Lion Rock Properties (Manchester Central) Ltd | Households | 2021 |
| Lion Rock Properties and Lettings Ltd | Real estate | 2017 |
| Lionridge Limited | Information & communication | 2016 |