| L.E Communications Ltd | Information & communication | 2022 |
| L.E.K. Scaffolding Limited | Construction | 2016 |
| L.G. Painting and Decorating Ltd | Construction | 2021 |
| L.In.C Medical Systems Limited | Wholesale & retail | 1998 |
| L.In.C. Medical Holdings Ltd | Financial services | 2024 |
| L.In.C. Medical Limited | Wholesale & retail | 2014 |
| L.In.C. Systems Limited | Extraterritorial | 2014 |
| L.M. Building Services Northampton Ltd | Construction | 2021 |
| L.M.A. Engineering Limited | Professional & scientific | 2019 |
| L.P. Welding (Group) Limited | Other services | 2024 |
| L.R. Services Limited | Other services | 1992 |
| L.S Interior Ltd | Manufacturing | 2020 |
| L.T. Inc Ltd | Transport & logistics | 2012 |
| L.T.C. Investments Limited | Real estate | 1987 |
| L.T.S. Couriers Limited | Transport & logistics | 2003 |
| L2 Facilities Limited | Professional & scientific | 2013 |
| L2L 2024 Ltd | Other services | 2024 |
| L4TIF Ltd | Financial services | 2021 |
| LA (Leicester) Limited | Administrative & support | 2012 |
| LA Adamski Ltd | Wholesale & retail | 2023 |
| LA Belle Beauty Lounge Ltd | Other services | 2015 |
| LA Bottega Leics Ltd | Hospitality | 2025 |
| LA Cachette Head Spa Ltd | Health & social care | 2024 |
| LA Coda V Limited | Hospitality | 2018 |
| LA Dolce Casa Limited | Professional & scientific | 2025 |
| LA Femme Belle Spa Ltd | Other services | 2017 |
| LA Fonte Italian Ltd | Hospitality | 2023 |
| LA Forêt Cafe Ltd | Hospitality | 2020 |
| LA Fumes Ltd | Wholesale & retail | 2019 |
| LA George Ltd | Wholesale & retail | 2025 |
| LA Jolie Ronde Limited | Education | 1988 |
| LA LUX UK Limited | Manufacturing | 2019 |
| LA Makeovers - Hair & Beauty Spa Ltd | Other services | 2025 |
| LA Mama Fresh Food Ltd | Hospitality | 2026 |
| LA Mano DE D10S Ltd | Health & social care | 2022 |
| LA Marque Aesthetics Leicester Ltd | Other services | 2025 |
| LA Mila Ltd | Wholesale & retail | 2021 |
| LA Pause Group Ltd | Administrative & support | 2025 |
| LA Philosophie Limited | Wholesale & retail | 2025 |
| LA Piana Limited | Hospitality | 2022 |
| LA RUE Limited | Construction | 2009 |
| LA Venice Wood Fired Pizzeria Ltd | Hospitality | 2018 |
| LA Vita MIA GA Limited | Hospitality | 2025 |
| Laai Limited | Extraterritorial | 2023 |
| Laalatee Limited | Manufacturing | 2019 |
| Laamy Ltd | Information & communication | 2025 |
| Laapiz Ltd | Wholesale & retail | 2023 |
| Laaska Ltd | Administrative & support | 2022 |
| LAB Twenty Seven Limited | Professional & scientific | 2025 |
| Laban Properties Ltd | Real estate | 2022 |
| Laban Time Ltd | Hospitality | 2025 |
| Labanty Ltd | Information & communication | 2025 |
| Label Apeel Limited | Manufacturing | 1994 |
| Label IT Ltd | Manufacturing | 2024 |
| Label Web Solutions Limited | Information & communication | 2011 |
| Labels Fast Limited | Manufacturing | 2020 |
| LABELS2PRINT Limited | Administrative & support | 2017 |
| Labosco Ltd | Information & communication | 2012 |
| Labras Group Limited | Real estate | 2023 |
| Labtech Industries Ltd | Manufacturing | 2019 |
| Laburnum Cars (Leicester) Limited | Wholesale & retail | 2003 |
| Laburnum Express Ltd | Wholesale & retail | 2018 |
| Laburnum Graphics Limited | Manufacturing | 1991 |
| Lace Market Apartments Ltd | Hospitality | 1978 |
| LACES1 Ltd | Wholesale & retail | 2019 |
| Ladder ACP Ltd | Education | 2024 |
| Ladenco Ltd | Wholesale & retail | 2025 |
| Ladies Fitness Ltd | Arts & recreation | 2011 |
| Ladkin Civils Ltd | Construction | 2021 |
| Ladnaan Health and Nutrition Limited | Hospitality | 2025 |
| Lady COX Ltd | Professional & scientific | 2017 |
| Lady Fashion (UK) Ltd | Manufacturing | 2017 |
| Lady Jane Grey Primary School | Education | 2012 |
| Ladybird Car Sales Ltd | Wholesale & retail | 2016 |
| Ladybird Holidays Ltd | Hospitality | 2024 |
| Ladybuds Studios Ltd | Education | 2026 |
| Ladyflock Ltd | Manufacturing | 2025 |
| Ladys Car Washing Ltd | Administrative & support | 2026 |
| Laffey's Limited | Transport & logistics | 2011 |
| Lafontana PVT Ltd | Hospitality | 2025 |
| Lafsha-In Ltd | Wholesale & retail | 2025 |
| Lagertha Health Access Ltd | Health & social care | 2021 |
| Laghai & Familybiz Limited | Wholesale & retail | 2018 |
| Lagor OIL Heating & Plumbing Limited | Construction | 2017 |
| Lahaware Investments Limited | Real estate | 2026 |
| Lahore Kitchen Limited | Hospitality | 2017 |
| Lahori Mandhi House Limited | Hospitality | 2026 |
| Lahori Tawa Leicester Ltd | Hospitality | 2019 |
| Lahori Tikka Kebabs Ltd | Hospitality | 2026 |
| Laisac Auto Clinic Ltd | Wholesale & retail | 2026 |
| Laisam Properties Limited | Construction | 2001 |
| Lajos Builder Limited | Construction | 2025 |
| Lajpal Care Limited | Administrative & support | 2025 |
| Lake Brookes Limited | Professional & scientific | 2021 |
| Lakecity Solutions Limited | Information & communication | 2014 |
| Lakedev Investments Limited | Real estate | 2005 |
| Lakehouse Holdings Ltd | Financial services | 2023 |
| Lakeland Polymers Limited | Water & waste | 2020 |
| Lakeman Health Care Services Ltd | Health & social care | 2018 |
| Lakeside Development Group Ltd | Construction | 2023 |