| London Luxury Tea Ltd | Wholesale & retail | 2015 |
| London Phillopateer Cleaning Service Ltd | Administrative & support | 2016 |
| London Plasticreconsurg Limited | Health & social care | 2022 |
| London Plumbing Services Ltd | Construction | 2021 |
| London Prime Property Service Ltd | Administrative & support | 2019 |
| London Project Contractors Ltd | Construction | 2019 |
| London Properties Experts Ltd | Construction | 2025 |
| London Property Preservation Ltd | Construction | 2009 |
| London Road (Long Sutton) Management Company Limited | Households | 2014 |
| London Road Business Ltd | Other services | 2012 |
| London Road Property Investments Limited | Real estate | 2018 |
| London Roadside Tyre Fitting Ltd | Wholesale & retail | 2026 |
| London Roofing Limited | Construction | 1998 |
| London Roselea College Ltd. | Education | 2020 |
| London Rubbish Removal Ltd | Water & waste | 2016 |
| London Sake Limited | Wholesale & retail | 2017 |
| London School of AI Education Limited | Education | 2025 |
| London School of Business & Technology (Lsbt) Limited | Education | 2008 |
| London School of Commerce Ltd | Education | 2014 |
| London Secure Services Limited | Health & social care | 2005 |
| London Skills & Development Network Limited | Education | 2006 |
| London Skills Hub Limited | Education | 2023 |
| London Strikers FC Ltd | Other services | 2019 |
| London Study Campus Limited | Education | 2025 |
| London Taxi Insurance Ltd. | Financial services | 2008 |
| London Tech Equity Ltd | Information & communication | 2023 |
| London Tech Equity Partners Ltd | Information & communication | 2024 |
| London TEN Limited | Real estate | 2024 |
| London Tile Suppliers Ltd | Wholesale & retail | 2020 |
| London Traffic Management Limited | Administrative & support | 2020 |
| London WIG Studio Limited | Other services | 2024 |
| London Y.E.S Limited | Information & communication | 2021 |
| London's Professional Accountants Ltd | Professional & scientific | 2022 |
| Londono Importacion E Exportacion (UK) Ltd | Wholesale & retail | 2023 |
| Londonr Limited | Construction | 2014 |
| Londonsparks Group Limited | Construction | 2025 |
| Londonsparks Limited | Construction | 2012 |
| Londra-Za Hospitality Limited | Hospitality | 2026 |
| Long Chaulden Limited | Wholesale & retail | 2014 |
| Longbourn ROW (Liphook) Limited | Households | 2013 |
| Longbow Intelligent Systems Ltd | Information & communication | 2025 |
| Longfellow & Co Solicitors Ltd | Professional & scientific | 2016 |
| Longhill Media Ltd | Professional & scientific | 2022 |
| Longlane Design Ltd | Professional & scientific | 2022 |
| Longqi International Media Ltd | Wholesale & retail | 2025 |
| Longsongs Music Limited | Information & communication | 1991 |
| Longwood House Management Company Limited | Households | 2016 |
| Loni Construction Limited | Construction | 2016 |
| Look Property Management Group Ltd | Real estate | 2016 |
| Lookbright Ltd | Real estate | 2023 |
| Loona More Ltd | Information & communication | 2021 |
| Lorac Court Management Limited | Households | 1990 |
| Lord House Management Company Limited | Households | 2022 |
| Lord-Austin Companies Limited | Wholesale & retail | 2024 |
| Lords Asset Management Ltd | Real estate | 2003 |
| Lords Associates Limited | Real estate | 1999 |
| Lords Design and Development Limited | Construction | 2014 |
| Lords Investments Limited | Financial services | 2007 |
| Lords Limited | Real estate | 2007 |
| Lords Property Management Limited | Real estate | 2006 |
| Lords Property Services Ltd. | Real estate | 2002 |
| Lore Photobooks Ltd | Wholesale & retail | 2026 |
| Lorenzo IL Magn Ltd | Construction | 2025 |
| Lorgan Ltd | Professional & scientific | 2017 |
| Lorhues Limited | Wholesale & retail | 2020 |
| Lorimell Limited | Other services | 2015 |
| Loring Hall Limited | Other services | 2003 |
| Lorlax Ltd | Professional & scientific | 2020 |
| Lorpin Limited | Wholesale & retail | 2015 |
| Lorraine Court(Sutton)Management Limited | Households | 1969 |
| Lorus Software Limited | Information & communication | 2009 |
| Lorven Housing Ltd | Health & social care | 2012 |
| Lorven Support Services Ltd | Administrative & support | 2015 |
| Loshite Limited | Construction | 2009 |
| Losis Properties Ltd | Construction | 2016 |
| Lost Boys SET Building Limited | Arts & recreation | 2017 |
| Lottie Promotions Limited | Other services | 2025 |
| Lotus Energies Limited | Professional & scientific | 2022 |
| Lotus Engineers Limited | Construction | 2013 |
| Lotus Flower Foods Ltd | Agriculture & fishing | 2016 |
| Lotus Foster Care Ltd | Health & social care | 2019 |
| Lotus Green Homes Limited | Real estate | 2022 |
| Lotus Holding Group Limited | Administrative & support | 2022 |
| Lotus Learning Ltd | Education | 2026 |
| Lotus Living for Young People Ltd | Health & social care | 2025 |
| Lotus Thai Kitchen Ltd | Hospitality | 2025 |
| Lotus Trans Travel Limited | Administrative & support | 2024 |
| Lotus Wimbledon Limited | Real estate | 2022 |
| Loucard Limited | Wholesale & retail | 2025 |
| Louco Limited | Real estate | 2019 |
| Loudmouth Content Ltd | Professional & scientific | 2023 |
| Loudwater Music Limited | Arts & recreation | 2004 |
| Lourdes OIL UK Ltd | Wholesale & retail | 2018 |
| Love Eats Ltd | Other services | 2023 |
| Love Lens Films & Pictures Ltd | Arts & recreation | 2024 |
| Love Lolu Ltd | Wholesale & retail | 2020 |
| Love of Learning Limited | Education | 2021 |
| Love Pasty Limited | Wholesale & retail | 2021 |
| Love Ride Limited | Wholesale & retail | 2022 |
| Love Songs Creative Group | Education | 2018 |