| Lacey Property Ventures Ltd | Real estate | 2026 |
| Lacn Estates Limited | Real estate | 2022 |
| Laconic Drinks Limited | Manufacturing | 2025 |
| Lacort Medical Education | Education | 2018 |
| Lacort Medical Limited | Professional & scientific | 2018 |
| Lactuca Limited | Households | 1973 |
| Ladbroke Investment Limited | Professional & scientific | 2024 |
| Ladbrokegnomes Limited | Information & communication | 2015 |
| Ladden Garden Pet Sitting Limited | Other services | 2025 |
| Ladder Hire Limited | Administrative & support | 2002 |
| Lade Limited | Other services | 1990 |
| Ladeda Ltd | Other services | 2022 |
| Ladet Investment Ltd | Real estate | 2024 |
| Ladet Properties Ltd | Real estate | 2019 |
| Ladet Psycho-Spiritual Company Limited | Health & social care | 2013 |
| Ladet Ventures Ltd | Real estate | 2025 |
| Lads Capital Limited | Financial services | 2021 |
| Ladushki LLP | | 2021 |
| Laduver Construction Ltd | Construction | 2025 |
| Lady Chef M.B Ltd | Hospitality | 2019 |
| Lady of the House Worldwide CIC | Administrative & support | 2022 |
| Lady P.J`S Hairdressing Limited | Other services | 2005 |
| Lady T Consulting Limited | Professional & scientific | 2016 |
| Lady Warrington Limited | Information & communication | 2019 |
| Ladybird Property Ltd | Real estate | 2018 |
| Laeh Investments | Professional & scientific | 2022 |
| Lafferty Telly Ltd | Information & communication | 2019 |
| Lago Dental Limited | Health & social care | 2025 |
| Lago Media and Communications Ltd | Households | 2025 |
| Laguna City Limited | Real estate | 2023 |
| Lahaat Holdings Limited | Administrative & support | 2026 |
| Lahmeds Limited | Public administration | 2026 |
| Lahori Enterprise Ltd | Information & communication | 2024 |
| Lahori Supermarket Ltd | Wholesale & retail | 2024 |
| Laidback Property Ltd | Real estate | 2021 |
| Laime UN Ltd | Administrative & support | 2024 |
| Laings Bookkeeping Ltd | Professional & scientific | 2023 |
| Lake Pochard Limited | Hospitality | 2013 |
| Lakeland FOX Limited | Real estate | 2016 |
| Lakelandspirit Ltd | Extraterritorial | 2012 |
| Lakers Homes Ltd | Real estate | 2024 |
| Lakes & Landworks Ltd | Construction | 2026 |
| Lakeside Padel Ltd | Arts & recreation | 2026 |
| Lakeside South Holdings Ltd | Real estate | 2026 |
| Lakeside Ventures Ltd | Arts & recreation | 2021 |
| Lakestamp Limited | Hospitality | 2004 |
| Lakhani Food Solutions Limited | Wholesale & retail | 2024 |
| Lakhile Bonsile Limited | Health & social care | 2015 |
| Lakkasta UK Limited | Real estate | 2024 |
| Lakme Fashion Week Limited | Extraterritorial | 2014 |
| Lakme Fashion Week London Limited | Extraterritorial | 2014 |
| Lakota Limited | Arts & recreation | 2019 |
| Laksa Solutions Ltd | Information & communication | 2017 |
| Lakspire Ltd | Wholesale & retail | 2024 |
| Lala Cleaning Services Ltd | Administrative & support | 2024 |
| Lala Enterprise Limited | Health & social care | 2024 |
| Lala Food Store 2 Ltd | Wholesale & retail | 2024 |
| Lala Food Store Ltd | Wholesale & retail | 2023 |
| Lala Green Shop Ltd | Wholesale & retail | 2024 |
| Lala Scaffolding Southwest Ltd | Construction | 2026 |
| Lalnasaurus Ltd | Information & communication | 2012 |
| Lalomanu Ltd | Professional & scientific | 2019 |
| LAM Research U.K. Ltd | Manufacturing | 2000 |
| LAM RIM Bristol Trading Company Limited | Health & social care | 1991 |
| Lamaya Restaurant Bristol Ltd | Hospitality | 2021 |
| Lamb Investment (Bristol) LLP | | 2019 |
| Lambardar Ltd | Professional & scientific | 2020 |
| Lambda Code Limited | Information & communication | 2023 |
| Lambourne Consultancy Services Limited | Professional & scientific | 2015 |
| Lame Property Management Ltd | Households | 2023 |
| Laminar Growth Partners LLP | | 2025 |
| Laminates Direct Ltd | Wholesale & retail | 2011 |
| Lamma Group Limited | Transport & logistics | 2025 |
| Lammo Limited | Information & communication | 2008 |
| Lamp Bristol Limited | Information & communication | 2013 |
| Lamp Recruitment Ltd | Administrative & support | 2025 |
| Lampiers Financial Planning Limited | Financial services | 1987 |
| Lamplighter Arts CIC | Arts & recreation | 2021 |
| Lamplighters Quay Boat Storage Ltd | Manufacturing | 2023 |
| Lamsburys Limited | Wholesale & retail | 2008 |
| Lamtar LP | | 2013 |
| Lamtech Films Limited | Information & communication | 2022 |
| Lana Barbers Ltd | Other services | 2019 |
| Lanadwell Limited | Real estate | 2010 |
| Lanarkshire Energy Holdings Limited | Financial services | 2025 |
| Lanaton Ltd | Administrative & support | 2024 |
| Lanaton Properties Ltd | Real estate | 2024 |
| Lancashire Climbing & Caving Club Limited | Arts & recreation | 2018 |
| Lancaster Assets Holdings Limited | Administrative & support | 2008 |
| Lancaster Motor Services Ltd | Wholesale & retail | 2023 |
| Lance Medical Ltd | Administrative & support | 2018 |
| Lance Nursing Services Ltd | Public administration | 2019 |
| Lancelot Guest Homes Ltd | Hospitality | 2026 |
| Lancer Scott Construction Limited | Construction | 2023 |
| Lancer Scott Construction West Limited | Construction | 2023 |
| Lancer Scott Facilities Management Limited | Construction | 1998 |
| Lancer Scott Holdings Limited | Financial services | 2021 |
| Lancer Scott Limited | Administrative & support | 2021 |
| Lanco Services Bristol Limited | Extraterritorial | 2013 |
| Land & Buildings Developments Limited | Construction | 2010 |