| LA Belle Jolie Ltd | Other services | 2018 |
| LA Boheme UK Limited | Administrative & support | 1996 |
| LA Cala Properties Limited | Real estate | 2016 |
| LA Credenza Limited | Wholesale & retail | 2001 |
| LA Darsena Ltd | Wholesale & retail | 2021 |
| LA Dolce Vista Windows and Exterior Cleaning Ltd | Administrative & support | 2026 |
| LA LUZ Residential Home Limited | Other services | 2009 |
| LA Maison Wellness Limited | Other services | 2018 |
| LA Moselle Investment Ltd | Financial services | 2015 |
| LA Nina Caffe' & Mercato Ltd | Hospitality | 2021 |
| LA Parma Ltd | Extraterritorial | 2018 |
| LA Pasta Limited | Hospitality | 2016 |
| LA Personal Training London Limited | Other services | 2014 |
| LA Pizzeria Croydon Ltd | Hospitality | 2018 |
| LA Pizzeria Pizza Limited | Hospitality | 2023 |
| LA Pizzeria Purley Ltd | Hospitality | 2022 |
| LA Vita MAS Band Ltd | Wholesale & retail | 2022 |
| LAA Limited | Health & social care | 2021 |
| LAB Foodie Ltd | Hospitality | 2025 |
| Labcycle Ltd | Water & waste | 2021 |
| Lacey Court Limited | Households | 1966 |
| Lacta Aurea Ltd | Wholesale & retail | 2026 |
| Ladbroke Grove Management Company Limited | Households | 2012 |
| Ladden Garden Village PL 24-27 (Leasehold Apartments) Management Company Limited | Households | 2021 |
| Lady Booth Flats Management Limited | Households | 1991 |
| Lady Luxury Ltd | Other services | 2025 |
| Lady Themis Ltd | Professional & scientific | 2025 |
| Ladybarn Residents Company Limited | Households | 2006 |
| Lafcom Limited | Wholesale & retail | 2023 |
| Lafcom Property Ltd | Real estate | 2026 |
| Lagos Party Entertainment Limited | Administrative & support | 2025 |
| LAH Property Marketing Limited | Administrative & support | 2010 |
| Laha Limited | Information & communication | 1992 |
| Laha Wellness Ltd | Wholesale & retail | 2026 |
| Laias Ltd | Hospitality | 2025 |
| Laiavi Limited | Wholesale & retail | 2023 |
| Laidback Productions Limited | Information & communication | 2009 |
| Laiden Holdings Ltd | Real estate | 2018 |
| Laila Senta Limited | Professional & scientific | 2025 |
| Lake Close Wimbledon Limited | Households | 1996 |
| Lakehall Construction Ltd | Construction | 2018 |
| Lakehall Homes Limited | Construction | 2014 |
| Lakeragroup Limited | Wholesale & retail | 2021 |
| Lakeside Convenience Stores Limited | Wholesale & retail | 2022 |
| Laks Enterprise Limited | Hospitality | 2019 |
| LAL International Ltd | Wholesale & retail | 2021 |
| LAL Properties Management Ltd | Real estate | 2025 |
| Lalason UK Limited | Health & social care | 2023 |
| Lalita Limited | Professional & scientific | 2016 |
| Lalita Moon Ltd | Health & social care | 2026 |
| Lalitaa Cosmetics UK Limited | Wholesale & retail | 2024 |
| Lalitha Sahasra Limited | Wholesale & retail | 2026 |
| Lalmani Cleaners Ltd | Administrative & support | 2025 |
| Lalmani Sapkota Ltd | Construction | 2024 |
| Lalux Properties Limited | Real estate | 2026 |
| Laly Letting Limited | Real estate | 2022 |
| LAM & Meerabux Solicitors Limited | Professional & scientific | 2007 |
| Lamar Restaurant Limited | Hospitality | 2021 |
| Lamara Properties Ltd | Real estate | 2016 |
| Lambdaai Ltd | Information & communication | 2024 |
| Lambeth Care Services Limited | Administrative & support | 2019 |
| Lambeth Motors Limited | Manufacturing | 2014 |
| Lambourne Close Management Company Limited | Households | 2016 |
| Lamio's Removals Ltd | Transport & logistics | 2022 |
| Lamko Services Ltd | Professional & scientific | 2025 |
| Lamtak Ltd. | Construction | 2014 |
| Lamura Construction Limited | Construction | 2018 |
| LAN Sky Ltd | Wholesale & retail | 2024 |
| Lancaster Care (UK) Ltd | Health & social care | 2022 |
| Lancaster Downs (Higham Ferrers) Management Company Limited | Households | 2004 |
| Lancaster Gate Properties Limited | Real estate | 2020 |
| Lancaster Mews Management Company Limited | Other services | 2004 |
| Lancaster Place Bromborough Management Company Limited | Households | 2008 |
| Lancefield Properties Limited | Construction | 1988 |
| Lanchester Residents Company Limited | Households | 2014 |
| Lancing Convenience Store Ltd | Wholesale & retail | 2024 |
| Land Genie Limited | Construction | 2012 |
| Land NET Soft Ltd | Information & communication | 2016 |
| Land Pharmacy Limited | Wholesale & retail | 2023 |
| Landarm Ltd | Administrative & support | 2014 |
| Landbuild Investments Limited | Administrative & support | 2022 |
| Landees Contractors Ltd | Construction | 2021 |
| Landip Services Limited | Construction | 2017 |
| Landlords Mate Limited | Water & waste | 2020 |
| Landmark Commercial Properties (Kent) Limited | Real estate | 2014 |
| Landmark Investments & Consultancy Limited | Real estate | 2017 |
| Landmark Lane Properties Ltd | Real estate | 2024 |
| Landmark Park Properties Limited | Real estate | 2006 |
| Landmark Prime Properties Limited | Real estate | 2020 |
| Landroid Motors Ltd | Wholesale & retail | 2024 |
| Lane's Butchers (Walworth Road) Limited | Real estate | 2001 |
| Laneham Place Management Company Limited | Households | 2008 |
| Lanes Properties Limited | Real estate | 2015 |
| Lanez Itemz Ltd | Wholesale & retail | 2024 |
| Langbourne Place Block IV Freehold Limited | Households | 2002 |
| Langbourne Place Block V Freehold Limited | Households | 2002 |
| Langbourne Place Block VI Freehold Limited | Households | 2015 |
| Langbourne Place Block VII Freehold Limited | Households | 2002 |
| Langdon Wolfe Ltd | Extraterritorial | 2016 |
| Langford Clinic Limited | Health & social care | 2000 |