| Lipopharma Limited | Professional & scientific | 2004 |
| Liquid Space Design Ltd | Construction | 2006 |
| Liquidlogic Limited | Information & communication | 2000 |
| Listmart Limited | Hospitality | 2014 |
| Literary Intelligence Limited | Information & communication | 2025 |
| Litorus Limited | Wholesale & retail | 2025 |
| Little HAT Productions Limited | Information & communication | 2020 |
| Little MEI Play Ltd | Arts & recreation | 2026 |
| Little More Barbers Oxford Ltd | Other services | 2021 |
| Little OWL Projects Limited | Real estate | 2007 |
| Little Oxford (NO.1) Management Company Limited | Households | 1993 |
| Little Venice Pizzeria Ltd | Hospitality | 2019 |
| Littlemore Properties Limited | Real estate | 2017 |
| Littler Mannings Developments Ltd | Real estate | 2018 |
| Livefully Care Ltd | Administrative & support | 2021 |
| Livefully Ltd | Extraterritorial | 2024 |
| Liveware Technologies Limited | Information & communication | 2007 |
| Living in Fitness Ltd | Other services | 2022 |
| Living the Drama Ltd | Other services | 2016 |
| Ll&E Boutique Ltd | Wholesale & retail | 2025 |
| LLF Holdings Limited | Financial services | 2017 |
| Lloyds Tree Services Limited | Administrative & support | 2013 |
| LM16 Property Limited | Administrative & support | 2016 |
| LMH Hospitality Services Limited | Hospitality | 1998 |
| LMK Devices Ltd | Wholesale & retail | 2022 |
| LMS Motors Ltd | Administrative & support | 2011 |
| Lnat Consortium Limited | Education | 2004 |
| LNH UK Ltd | Real estate | 2025 |
| Locai Labs Limited | Information & communication | 2022 |
| Local Driving Academy Limited | Education | 2011 |
| Locale Limited | Administrative & support | 2006 |
| Locallyuk.Com Limited | Information & communication | 2019 |
| Location Extreme (UK) Limited | Manufacturing | 2000 |
| Location Rigging Ltd | Construction | 2015 |
| Loci General Builder Ltd | Construction | 2023 |
| Locos House Ltd | Hospitality | 2025 |
| Locum Solutions Ltd | Health & social care | 2017 |
| Logician Automation Ltd | Information & communication | 2016 |
| Logis (GB) Limited | Hospitality | 1991 |
| Logistics Accident Repair Centre Limited | Wholesale & retail | 2023 |
| Logstock Limited | Extraterritorial | 1976 |
| Lombard Street (Abingdon) Management Ltd | Households | 2015 |
| Lombonya Ltd | Health & social care | 2015 |
| London AI Group Ltd | Information & communication | 2024 |
| London and Westminster Investments Limited | Extraterritorial | 1971 |
| London Aviation Private Ltd | Wholesale & retail | 2011 |
| London Bargain Store Ltd | Wholesale & retail | 2021 |
| London Medical Technology Ltd | Wholesale & retail | 2024 |
| London Merchant Bank Limited | Professional & scientific | 1999 |
| London Merchant Capital Limited | Extraterritorial | 2016 |
| London PCO Rental Ltd | Administrative & support | 2026 |
| London Rainbow Ltd | Wholesale & retail | 2022 |
| London Road Wheatley Management Limited | Households | 2013 |
| Lone Palm Studios Ltd | Information & communication | 2016 |
| Lonely Island Limited | Information & communication | 2020 |
| Long Acre 81 Limited | Professional & scientific | 2019 |
| Long Brothers (Haulage) Limited | Information & communication | 1973 |
| Long ROW Wealth Advisory Limited | Financial services | 2017 |
| Long Term Momentum Ltd | Financial services | 2024 |
| Long Term Tenancy Solutions (Lotts) Ltd | Real estate | 2016 |
| Longacre House Limited | Construction | 2009 |
| Longaswim Limited | Manufacturing | 2014 |
| Longford Close Management Company Limited | Households | 1998 |
| Longho Merlin Limited | Real estate | 2013 |
| Longmore Computers Limited | Information & communication | 2000 |
| Longshot Labs Ltd | Professional & scientific | 2020 |
| Longstop Limited | Professional & scientific | 2025 |
| Longwall II Limited | Construction | 2018 |
| Longwick (the Pastures) Management Co Ltd | Households | 2019 |
| Lonox Ltd | Hospitality | 2024 |
| Lonsdale House Limited | Real estate | 1996 |
| Lonsdale Residence Ltd | Hospitality | 2018 |
| Lookseecity Limited | Information & communication | 2009 |
| Looktrans Limited | Transport & logistics | 2014 |
| Loomsbury UK Limited | Professional & scientific | 2020 |
| Looney Balloonies Limited | Arts & recreation | 1998 |
| Loop Subscriptions Limited | Administrative & support | 2025 |
| Lord & Lord Healthcare Partners Limited | Health & social care | 2024 |
| Lords Property Maintenance Limited | Real estate | 2026 |
| Loren Griffith Consulting Ltd | Professional & scientific | 2020 |
| Lorraine Wood Designs Ltd | Other services | 2013 |
| LOS Hermanos PK Ltd | Hospitality | 2025 |
| Losha Logistics 17 Ltd | Transport & logistics | 2025 |
| Lota Holdings Limited | Financial services | 2018 |
| Lotuspinkus Medical Devices Ltd | Professional & scientific | 2025 |
| Lotvista Ltd | Information & communication | 2026 |
| Lou's Light CIC | Hospitality | 2026 |
| Louise Field Consultancy Limited | Education | 2016 |
| Louise Walters Limited | Arts & recreation | 2013 |
| Love Coffee High Street Ltd | Hospitality | 2023 |
| Love Coffee Iffley Road Ltd | Hospitality | 2023 |
| Love Coffee Oxon Ltd | Hospitality | 2021 |
| Love Coffee Summertown Ltd | Hospitality | 2025 |
| Love HZ Ltd | Information & communication | 2013 |
| Love Made ME Weddings Ltd. | Other services | 2018 |
| Love Retro Ltd | Wholesale & retail | 2025 |
| Love Travel Services Ltd | Administrative & support | 2025 |
| Love&Co Holdings Limited | Financial services | 2025 |
| Love&Co Trading Limited | Financial services | 2025 |
| Lovelace Properties Limited | Real estate | 2007 |