| London Rigging Limited | Administrative & support | 2014 |
| London Road Assist Ltd | Wholesale & retail | 2026 |
| London School of Business and Research Limited | Education | 2017 |
| London School of Contemporary Education Limited | Education | 2016 |
| London School of Cyber Security Ltd | Information & communication | 2023 |
| London School of Design Ltd | Education | 2021 |
| London School of International Business Limited | Education | 2012 |
| London School of Management and Media Limited | Education | 2024 |
| London School of Planning and Management Limited | Education | 2014 |
| London School of Sales Ltd | Professional & scientific | 2019 |
| London School of Trends Ltd | Administrative & support | 2012 |
| London School of Trendz Limited | Education | 2018 |
| London Seoul Limited | Hospitality | 2012 |
| London Shades LLP | | 2017 |
| London Shanghai Silkway Maritime Ltd | Wholesale & retail | 2024 |
| London Sky Limited | Professional & scientific | 2017 |
| London Slimming Clinic Limited | Health & social care | 2019 |
| London Smart Construct Services Limited | Professional & scientific | 2016 |
| London Spice Company Limited | Manufacturing | 2016 |
| London Spice F H C Ltd | Hospitality | 2020 |
| London Sterling Limited | Administrative & support | 2015 |
| London Stone and Tiles Limited | Wholesale & retail | 2014 |
| London Stylist Academy Ltd | Arts & recreation | 2020 |
| London Success Clinic Ltd | Administrative & support | 2014 |
| London Sultan Homes Ltd | Real estate | 2023 |
| London Supps Limited | Wholesale & retail | 2011 |
| London Taekwondo Elites Limited | Arts & recreation | 2021 |
| London Taxi Rentals Limited | Transport & logistics | 2022 |
| London Thames Ltd | Professional & scientific | 2013 |
| London Thames Trading Ltd | Wholesale & retail | 2026 |
| London Theatre Workshops Limited | Administrative & support | 1999 |
| London Tobacco (Overseas) Limited | Professional & scientific | 2010 |
| London Tool Services & Hire Ltd | Administrative & support | 2020 |
| London Travel & Exchange Ltd | Administrative & support | 2014 |
| London Travel Solution Limited | Transport & logistics | 2022 |
| London United Exports Limited | Wholesale & retail | 1987 |
| London Urban Investments Limited | Real estate | 2014 |
| London Urology Experts Limited | Health & social care | 2018 |
| London Vascular Services Limited | Health & social care | 2001 |
| London Walls UP Ltd | Construction | 2020 |
| London West Investments Ltd | Real estate | 2019 |
| London Women's Health Limited | Health & social care | 2019 |
| London Youth Games Foundation | Arts & recreation | 1986 |
| Londonewcastle (QP2) LLP | | 2016 |
| Londongrad Limited | Professional & scientific | 2025 |
| Londonguild Investments Limited | Real estate | 2017 |
| Londoniete Ltd | Information & communication | 2018 |
| Londonluxurycleaning Ltd | Administrative & support | 2025 |
| Londons Community Kitchen CIC | Education | 2020 |
| Londonskylightglazing Ltd | Construction | 2026 |
| Londonskylightsandglazing Limited | Construction | 2026 |
| Londonwide Property Refurbishment Limited | Construction | 2012 |
| Londoor Ltd | Administrative & support | 2022 |
| Long ARM Investments Limited | Construction | 2022 |
| Long Life Lamp Company Ltd | Wholesale & retail | 2007 |
| Long Orbit Limited | Financial services | 2025 |
| Longdale Fuel Ltd | Wholesale & retail | 2017 |
| Longdon Creative Ltd | Arts & recreation | 2025 |
| Longfleet Limited | Arts & recreation | 1994 |
| Longivitate Ltd | Real estate | 2022 |
| Longley Road Property Ltd | Households | 2022 |
| Longley Solutions Limited | Information & communication | 2013 |
| Longman League of Gentlemen Ltd | Real estate | 1986 |
| Longmere Land Ltd | Real estate | 2025 |
| Longmont (Brownfields) Limited | Construction | 2021 |
| Longmont Investments Limited | Real estate | 2024 |
| Longmont Swallowfield Limited | Real estate | 2019 |
| Longton Retail Ltd | Wholesale & retail | 2026 |
| Lonka Estates Ltd | Administrative & support | 2023 |
| Lontech Solutions Ltd | Information & communication | 2016 |
| Looking 4 Ltd | Information & communication | 2025 |
| Loomify Ltd | Information & communication | 2025 |
| Loop Legacy Limited | Information & communication | 2026 |
| Loose Tongue Limited | Arts & recreation | 2017 |
| Lord Hills Limited | Construction | 2020 |
| Loredanavas Ltd | Construction | 2026 |
| Loreluka Construction Ltd | Construction | 2023 |
| Lorne Stewart (Northern) Limited | Professional & scientific | 1931 |
| Lorne Stewart PLC | Construction | 1978 |
| Loro Investments Limited | Real estate | 2019 |
| Loroke Ltd | Administrative & support | 2023 |
| Lorven Limited | Extraterritorial | 2015 |
| Lost in Music Ltd | Arts & recreation | 2019 |
| Lostinshoreditch Ltd | Hospitality | 2025 |
| Lotus Accountants Ltd | Professional & scientific | 2022 |
| Lotus Benefit Consultants Limited | Financial services | 1995 |
| Lotus Care 1 Limited | Health & social care | 2007 |
| Lotus Coaching Limited | Professional & scientific | 2007 |
| Lotus Consultancy Limited | Professional & scientific | 2020 |
| Lotus Consultancy Services Ltd | Administrative & support | 2022 |
| Lotus Design & Build Ltd | Construction | 2025 |
| Lotus Film Production Company Limited | Information & communication | 2020 |
| Lotus Global Sourcing Ltd | Wholesale & retail | 2025 |
| Lotus Healthcare Limited | Health & social care | 1990 |
| Lotus Order Ltd | Health & social care | 2024 |
| Lotus Property Consultants Limited | Real estate | 2017 |
| Lotus Shine Ltd | Administrative & support | 2024 |
| Lotus Support Services (UK) Ltd | Extraterritorial | 2023 |
| Lotus Trinity Limited | Construction | 2022 |
| Loudwater Enterprises Limited | Real estate | 2011 |