| Lifetime Health & Fitness Limited | Extraterritorial | 2010 |
| Lifetime Homes (South West) Ltd | Construction | 2020 |
| Lifetime Property Investments Limited | Construction | 2018 |
| Lifetime Training Group Limited | Education | 1996 |
| Lifetime Training Limited | Extraterritorial | 2010 |
| Lifetrek Limited | Professional & scientific | 2000 |
| Lifette Ltd | Wholesale & retail | 2025 |
| Lifeware Ltd | Information & communication | 2020 |
| Lifeworks Limited | Information & communication | 2012 |
| Liftdec Ltd | Construction | 2021 |
| Lifting Gear & Safety Limited | Manufacturing | 2009 |
| LIFTING365 Web Store Limited | Wholesale & retail | 2018 |
| Liftmax Ltd | Transport & logistics | 2024 |
| Light & Airey Services Limited | Administrative & support | 2015 |
| Light Box Bristol Limited | Real estate | 2024 |
| Light Box Project Community Interest Company | Education | 2010 |
| Light Communication & Digital Services Ltd | Professional & scientific | 2025 |
| Light in Dark Ltd | Transport & logistics | 2022 |
| Light Trace Photonics Ltd | Manufacturing | 2021 |
| Light Trail Ltd | Extraterritorial | 2015 |
| Light UP Events Ltd | Manufacturing | 2022 |
| Light-Up Properties Ltd | Real estate | 2023 |
| Lightbox Lane Ltd | Hospitality | 2016 |
| Lightbox Theatre Productions | Arts & recreation | 2013 |
| Lightbug Ltd | Manufacturing | 2017 |
| Lightbulb Works Ltd. | Information & communication | 2015 |
| Lightcraft Developments Ltd | Construction | 2019 |
| Lightforge Video Ltd | Information & communication | 2020 |
| Lighthouse Builders Ltd | Construction | 2013 |
| Lighthouse Constructions Limited | Construction | 2010 |
| Lighthouse Consulting Services Limited | Professional & scientific | 2016 |
| Lighthouse Equities Ltd | Real estate | 2023 |
| Lighthouse Schools Partnership | Education | 2011 |
| Lightmouse Ltd | Information & communication | 2013 |
| Lightning 1 Energy Park Limited | Energy | 2021 |
| Lightning Consultancy Services Limited | Professional & scientific | 2020 |
| Lightning Defence Services Ltd | Manufacturing | 2013 |
| Lightning Speed Logistics Limited | Transport & logistics | 2025 |
| Lights! Lights! Lights! CIC | Arts & recreation | 2023 |
| Lightsky Group Holdings Limited | Financial services | 2025 |
| Lightsky Group Operations Limited | Health & social care | 2025 |
| Lightsky Properties Limited | Financial services | 2015 |
| Lightspeed Arctic Ltd | Mining & quarrying | 2018 |
| Lightwell Research Ltd. | Information & communication | 2006 |
| Lightworks FM Limited | Information & communication | 2000 |
| Likemind Developments 2 Ltd | Households | 2024 |
| Likemind Developments 3 Ltd | Construction | 2025 |
| Likemind Developments Limited | Real estate | 2006 |
| Likeminded Ltd | Health & social care | 2022 |
| Likeness Digi Media Limited | Information & communication | 2026 |
| LIL1 Solar Limited | Energy | 2026 |
| Lilac House Therapy Centre Limited | Other services | 2004 |
| Lilac Wine Ltd | Hospitality | 2022 |
| Lilamasi Limited | Health & social care | 2011 |
| Lilhared Limited | Professional & scientific | 2019 |
| Lilia Hair and Beauty Ltd | Other services | 2024 |
| Lilian Cafe Ltd | Hospitality | 2025 |
| Lilian Restaurant & Grill Ltd | Hospitality | 2020 |
| Lilit. Hair & Beauty Limited | Other services | 2010 |
| Lillibrooke (Maidenhead) Residents Management Company Limited | Households | 2026 |
| Lillicoco Limited | Wholesale & retail | 2016 |
| Lilly Estates Ltd | Real estate | 2024 |
| Lilly Nash Ltd | Health & social care | 2014 |
| Lillys Marine Automation Ltd | Manufacturing | 2021 |
| Lily Cole Beauty Ltd | Other services | 2021 |
| Lily Holdings Limited | Professional & scientific | 2015 |
| Lily Kays Property Management Limited | Real estate | 2023 |
| Lily Sweets Ltd | Hospitality | 2025 |
| Lily Violet MAY Ltd | Wholesale & retail | 2014 |
| Lily Wednesday Limited | Professional & scientific | 2026 |
| Lily's Orchard Management Company Ltd | Real estate | 2019 |
| Lilybest Ltd | Administrative & support | 2025 |
| Lilyiris Accounting Ltd | Professional & scientific | 2015 |
| Lilyleo Roofing and Building Ltd | Construction | 2023 |
| Lilymead Avenue Management Company | Real estate | 2022 |
| Lilyrose Hair & Beauty Ltd | Other services | 2019 |
| Lilys Lettings Ltd | Real estate | 2023 |
| Lima Consultants Ltd | Professional & scientific | 2025 |
| Lima Properties SW Limited | Real estate | 2025 |
| Limasi Ltd | Health & social care | 2025 |
| Limber Coaching Ltd | Administrative & support | 2026 |
| Limber Jobs Limited | Information & communication | 2016 |
| Limber Limited | Real estate | 2001 |
| Limbic Cinema Studio Limited | Information & communication | 2017 |
| Limbic Services Ltd | Professional & scientific | 2021 |
| Limbs & Things Employee Trustee Limited | Professional & scientific | 2018 |
| Limbs & Things Limited | Manufacturing | 1990 |
| Limchester Properties Limited | Real estate | 1962 |
| Lime Construction Group Ltd | Construction | 2024 |
| Lime Environmental Limited | Agriculture & fishing | 2017 |
| Lime Green Consulting & Training Ltd | Professional & scientific | 2019 |
| Lime Tree Dental Practice Ltd | Health & social care | 2025 |
| Lime Tree Galleries Ltd | Arts & recreation | 2006 |
| Lime Tree Limited | Information & communication | 2025 |
| Lime Trees Vets Limited | Extraterritorial | 2017 |
| Limekiln Farm Limited | Agriculture & fishing | 2012 |
| Limeknight Ltd | Information & communication | 2014 |
| Limelight Hair & Beauty Bristol Limited | Other services | 2017 |
| Limeoak Management Limited | Administrative & support | 2005 |
| Limetree Property Holdings Ltd | Real estate | 2017 |