| Lirsmarm Ltd | Health & social care | 2015 |
| Lisa Fletcher; Therapy, Consultation and Clinical Services Limited | Health & social care | 2018 |
| Lisa Homes Cleaning Services Limited | Administrative & support | 2021 |
| Lisa Shanley Limited | Arts & recreation | 2014 |
| Lisa Shepherd Haircare Limited | Professional & scientific | 2019 |
| Lisa's Hairline Limited | Wholesale & retail | 2025 |
| Lishmans Central Partner Limited | Professional & scientific | 2019 |
| Lishmans LLP | | 2016 |
| Lisoco Ltd | Health & social care | 2020 |
| Lister & Dunn Ltd | Construction | 2020 |
| Listerdale Motor Company Limited(The) | Extraterritorial | 1955 |
| LIT Home Ltd | Manufacturing | 2021 |
| Litigationware Limited | Information & communication | 2018 |
| Litlun's Homes Limited | Real estate | 2020 |
| Litlun's Ltd | Arts & recreation | 2009 |
| Little Acorns Childminding Limited | Health & social care | 2024 |
| Little Acorns Clothing Limited | Wholesale & retail | 2021 |
| Little C London Limited | Wholesale & retail | 2026 |
| Little Critters Brewing Company Limited | Manufacturing | 2015 |
| Little Croft Close Management Company Limited | Households | 2024 |
| Little Dough Ltd | Hospitality | 2020 |
| Little Dragons Limited | Arts & recreation | 2016 |
| Little E Media Limited | Information & communication | 2023 |
| Little Einsteins Nursery and Pre-School Limited | Education | 2019 |
| Little Einsteins Nursery Trading Ltd | Health & social care | 2025 |
| Little Explorers Day Care Nursery (Rotherham) Limited | Education | 2010 |
| Little Fire Digital Limited | Information & communication | 2014 |
| Little Fish Marketing Limited | Manufacturing | 2007 |
| Little Freddies Nursery School Ltd | Education | 2006 |
| Little Gems Day Nursery Limited | Health & social care | 2018 |
| Little Gems Salon Ltd | Other services | 2011 |
| Little Greenhouse Nursery and PRE School Ltd | Education | 2025 |
| Little IMP Pre-School Limited | Education | 2006 |
| Little Mesters Agency Ltd | Professional & scientific | 2019 |
| Little Mesters Brewers Limited | Manufacturing | 2025 |
| Little Mesters Brewing Limited | Manufacturing | 2019 |
| Little Narratives Ltd | Information & communication | 2024 |
| Little Nippers (Seven Hills) Ltd | Education | 2024 |
| Little Oak Healthcare Limited | Health & social care | 2021 |
| Little PEA POD Properties Ltd | Real estate | 2024 |
| Little Peak Properties Limited | Real estate | 2023 |
| Little Petals Ltd | Health & social care | 2022 |
| Little Reunion Ltd | Hospitality | 2025 |
| Little SEW and Sews Ltd | Manufacturing | 2021 |
| Little Spark Lettings Limited | Real estate | 2014 |
| Little Stars Hand Car Wash Ltd | Other services | 2024 |
| Little Tarsier Productions Limited | Information & communication | 2013 |
| Little Voice Kwpn Ltd | Professional & scientific | 2024 |
| Little Wonders Nurseries Limited | Health & social care | 2012 |
| Little Wonders Sensory Ltd | Health & social care | 2025 |
| Little Wyns Ltd | Hospitality | 2021 |
| Littlecobs Ltd | Education | 2025 |
| Littleford Interiors Ltd. | Construction | 2025 |
| Littlelink Ltd | Information & communication | 2024 |
| Littlemoor Engineering Limited | Professional & scientific | 1977 |
| Littlemy Consulting Limited | Information & communication | 2025 |
| Littleworth Homes Ltd | Real estate | 2024 |
| LIU Accountants Limited | Professional & scientific | 2011 |
| LIU LIU Shun Ltd | Construction | 2021 |
| LIV Aestheticsx Ltd | Other services | 2025 |
| Liv-Here Ltd | Real estate | 2026 |
| Live and Learn Training Ltd | Extraterritorial | 2015 |
| Live More Productive Ltd | Wholesale & retail | 2023 |
| Live Oak Ltd | Information & communication | 2009 |
| Live-Link (Call Systems) Limited | Wholesale & retail | 2006 |
| Liveable Limited | Real estate | 2021 |
| Livefoods Holdings (Yorkshire) Limited | Manufacturing | 2010 |
| Liversidge Road Surfacing Contractors Ltd | Construction | 2012 |
| Livfia Limited | Wholesale & retail | 2025 |
| Livfit Coaching Ltd | Education | 2023 |
| Livin Your Best Life Ltd | Wholesale & retail | 2023 |
| Living Soles Limited | Wholesale & retail | 2020 |
| Livingwater Food & Skills Development Projects Ltd | Education | 2021 |
| Livlar Ltd | Wholesale & retail | 2020 |
| Liwal Ltd | Wholesale & retail | 2023 |
| Lixin Pet Limited | Wholesale & retail | 2025 |
| LIZ Hanks Ltd | Arts & recreation | 2004 |
| Lizannes Bar Ltd | Hospitality | 2019 |
| Lizards EAT Meatballs Media Ltd | Information & communication | 2023 |
| Lizzie Biscuits Limited | Arts & recreation | 2019 |
| Lizzy's Leads Ltd | Administrative & support | 2026 |
| LJ Beautique Ltd | Other services | 2017 |
| LJ Construction Sheff Ltd | Construction | 2024 |
| LJ Driver Ltd | Transport & logistics | 2020 |
| LJ Storage Limited | Construction | 2013 |
| LJB Consulting Limited | Professional & scientific | 2026 |
| LJB Joinery Services Limited | Construction | 2019 |
| LJB Property Solutions Limited | Real estate | 2022 |
| Ljblair Services Ltd | Construction | 2025 |
| LJC Risk Management Limited | Professional & scientific | 2019 |
| LJG Plumbing Ltd | Construction | 2018 |
| LJK Design and Build Limited | Construction | 2018 |
| LJM Printing Ltd | Manufacturing | 2024 |
| LJO Property Limited | Real estate | 2024 |
| LJT Automovers Ltd | Transport & logistics | 2026 |
| LJY Management Ltd | Construction | 2024 |
| LK Educational Psychology Services Limited | Education | 2022 |
| LK Nails & Spa Limited | Other services | 2024 |
| LK Sparky Ltd | Construction | 2019 |
| LKB Business Support Ltd | Professional & scientific | 2025 |