| Lifelong Learning College Ltd. | Education | 2019 |
| Lifeoffavour Limited | Health & social care | 2017 |
| Lifesgalore Ltd | Wholesale & retail | 2023 |
| Lifespring Ministries | Other services | 2007 |
| Lifestyle Magazine (West Midlands) Limited | Information & communication | 2018 |
| Lifestyle Test Services Limited | Information & communication | 2015 |
| Lifetouch Ltd | Health & social care | 2022 |
| Light of Africa Limited | Professional & scientific | 2024 |
| Light Rave Studios Ltd | Information & communication | 2022 |
| Lighthouse Photography Limited | Professional & scientific | 2003 |
| Lightmen Limited | Arts & recreation | 2020 |
| Lightwood Consultancy Limited | Information & communication | 1999 |
| Like Books & Design Limited | Information & communication | 2012 |
| Likhitha@Work Limited | Health & social care | 2022 |
| Lileo Group Ltd | Financial services | 2025 |
| Lili and Archie Ltd | Wholesale & retail | 2025 |
| Lilipop Limited | Real estate | 2018 |
| Lilliput UK Ltd | Wholesale & retail | 1997 |
| Lillybud Events Limited | Hospitality | 2024 |
| Lilylocus Ltd | Wholesale & retail | 2020 |
| Lilymia Ltd | Wholesale & retail | 2025 |
| Lime Healthcare Limited | Other services | 2014 |
| Lime Healthcare Properties Ltd | Hospitality | 2018 |
| Limebird Designs Ltd | Professional & scientific | 2022 |
| Limelock Court (One) Management Limited | Households | 2009 |
| Limes Court Nursery School Limited | Education | 2020 |
| Limitless Interiorz Limited | Administrative & support | 2008 |
| Limitless Records Limited | Information & communication | 2003 |
| Limitless Wash UK Ltd | Other services | 2017 |
| Linden Care Group Ltd | Financial services | 2024 |
| Linden LEA Limited | Information & communication | 2018 |
| Linden Residential Homes Ltd | Health & social care | 2024 |
| Lindy LOU Enterprises Limited | Wholesale & retail | 2021 |
| Linea Sportswear Ltd | Wholesale & retail | 2024 |
| Lines Landscaping Ltd | Construction | 2023 |
| Ling Developments Limited | Construction | 2011 |
| Ling Homes (Halesowen) Limited | Construction | 2018 |
| Ling Homes (the Crest) Limited | Construction | 2024 |
| Ling Homes Limited | Construction | 2015 |
| Ling Investments Limited | Real estate | 2024 |
| Ling Piling Ltd | Construction | 2020 |
| Linguistic Link Ltd | Professional & scientific | 2025 |
| Linh Phan 277 Limited | Other services | 2022 |
| Link Contract Management Ltd | Professional & scientific | 2018 |
| Link Elem Limited | Transport & logistics | 2019 |
| Link Foods Ltd | Wholesale & retail | 2019 |
| Link Pack Ltd | Wholesale & retail | 2022 |
| Link Webica Ltd | Information & communication | 2026 |
| Linkestra Ltd | Information & communication | 2026 |
| Linkohub Ltd | Professional & scientific | 2026 |
| Linkoutreach Ltd | Information & communication | 2025 |
| Links Holdings (WM) Ltd | Financial services | 2025 |
| Linkss Ltd | Health & social care | 2022 |
| Linlithgow Bridge Real Estate Limited | Real estate | 2022 |
| Linton Products Limited | Wholesale & retail | 2018 |
| Lion's Gate Hot Sauce Ltd | Manufacturing | 2025 |
| Lion-Fpg Limited | Manufacturing | 2004 |
| Lioness Accounts Ltd | Professional & scientific | 2020 |
| Lioness Dwellings Ltd | Households | 2021 |
| Liongate Investments Limited | Financial services | 2025 |
| Lionhart Enterprises Ltd | Construction | 2018 |
| Lionhart Holdings Ltd | Real estate | 2021 |
| Lionheart Group (Birmingham) Limited | Real estate | 2019 |
| Lions Pride Ventures Ltd | Financial services | 2025 |
| Liontech 1996 Limited | Wholesale & retail | 2001 |
| Liquor Distilled Ltd | Wholesale & retail | 2024 |
| Liquor Store Darlaston Limited | Wholesale & retail | 2025 |
| Liquorstop Ltd | Wholesale & retail | 2019 |
| Lisa Milner Hair Academy Ltd | Other services | 2025 |
| Lisa Milner Limited | Other services | 2020 |
| Lisacul Limited | Hospitality | 2025 |
| Lish Ltd | Other services | 2022 |
| Lite-Seal Limited | Extraterritorial | 1998 |
| Litigation Funding Support Services Ltd | Professional & scientific | 2012 |
| Little Balance Limited | Manufacturing | 2026 |
| Little Bears Nursery Limited | Education | 2012 |
| Little Campers Day Nursery Ltd | Administrative & support | 2023 |
| Little Daisies (Wollaston) Limited | Education | 2015 |
| Little Dessert Shop (Holdings) Limited | Professional & scientific | 2016 |
| Little Dessert Shop (Wigan) Limited | Wholesale & retail | 2026 |
| Little Dessert Shop (Wolverhampton) Ltd | Wholesale & retail | 2020 |
| Little Doves Nursery & Preschool Ltd | Health & social care | 2023 |
| Little Earth Centre Ltd | Arts & recreation | 2022 |
| Little Gems Nursery Compton Ltd | Education | 2021 |
| Little Indulge Ltd | Other services | 2025 |
| Little Lava’S Ltd | Wholesale & retail | 2025 |
| Little Monkeys Messy Play Limited | Health & social care | 2026 |
| Little Pippins Limited | Health & social care | 2017 |
| Little Twinkle Stars Limited | Hospitality | 2025 |
| Little Venice Aesthetics Ltd | Other services | 2020 |
| Little Walkers WV Limited | Health & social care | 2025 |
| Little Woodlings Nursery Ltd | Health & social care | 2020 |
| Littleco Limited | Real estate | 2014 |
| Littleworth Hub Ltd | Transport & logistics | 2026 |
| Litupglobalentertainment Limited | Administrative & support | 2023 |
| LIV 21 Ltd | Wholesale & retail | 2023 |
| LIV A1 Ltd | Real estate | 2022 |
| Live 2 Help Recruitment Ltd | Administrative & support | 2018 |
| Live Displays Ltd | Administrative & support | 2023 |
| Livella Construction Ltd | Construction | 2024 |