| Labor Omnia Vincit Limited | Professional & scientific | 2017 |
| Laboratory QMS Consultants Ltd | Professional & scientific | 2024 |
| Labosport Limited | Administrative & support | 2004 |
| Labrador Property Solutions Ltd | Real estate | 2024 |
| Labroseanisha Ltd | Administrative & support | 2016 |
| Labtec (Services) Limited | Manufacturing | 1996 |
| Lace and Lilac Ltd | Professional & scientific | 2025 |
| Lace and Textiles Ltd | Wholesale & retail | 2000 |
| Lace Bar Ltd | Hospitality | 2024 |
| Lace Design Ltd | Professional & scientific | 2023 |
| Lace Law LLP | | 2024 |
| Lace Market Consultancy Ltd | Professional & scientific | 2025 |
| Lace Market Embroidery Limited | Manufacturing | 2002 |
| Lace Market One LLP | | 2013 |
| Lace Market Point Holdings Limited | Real estate | 2020 |
| Lace Market Point Limited | Construction | 2017 |
| Lace Market Theatre Trust Limited(The) | Arts & recreation | 1977 |
| Lace Marketing Ltd | Administrative & support | 2014 |
| Lace Mechanics Limited | Administrative & support | 1953 |
| Lacehouse Kitchen Ltd | Manufacturing | 2016 |
| Laceknit (1989) Limited | Manufacturing | 1989 |
| Lacemakers House Management Limited | Households | 1998 |
| Lacemakers Limited | Arts & recreation | 2017 |
| Lacemarket Limited | Hospitality | 2013 |
| Laceys Floors and Walls Ltd | Construction | 2021 |
| Lacie MAI Development Limited | Construction | 2019 |
| Lacuna Foundry Ltd | Information & communication | 2026 |
| Lacy Agencies (Fabrics) Limited | Wholesale & retail | 1998 |
| Ladderack Limited | Real estate | 2019 |
| Ladkins Limited | Manufacturing | 2008 |
| Ladoski Kitchen Ltd | Hospitality | 2025 |
| Lady and LAB Property Ltd | Real estate | 2026 |
| Lady Bay Arts CIC | Arts & recreation | 2024 |
| Lady Bay Court Limited | Real estate | 2004 |
| Lady Bay Dental Care Ltd | Health & social care | 2009 |
| Lady Bay House (Nottingham) Ltd | Real estate | 2026 |
| Lady Bay House Limited | Households | 2025 |
| Lady Bay Inns Limited | Hospitality | 2010 |
| Lady Bay Lettings Limited | Real estate | 2023 |
| Lady Bay Music Community Interest Company | Arts & recreation | 2026 |
| Lady Bay Plumbing & Heating Limited | Construction | 2004 |
| Lady Bay Road Management Company Limited | Households | 2014 |
| Lady Bay Tennis & Sports Club | Arts & recreation | 2009 |
| Lady C Kitchen Limited | Hospitality | 2021 |
| Lady Di's Eatery Ltd | Manufacturing | 2025 |
| Lady Dorcas Healthcare Limited | Health & social care | 2013 |
| Lady P Studio Ltd | Manufacturing | 2026 |
| Ladybay Healthcare Ltd | Wholesale & retail | 2025 |
| Ladybay Pizza Ltd | Hospitality | 2025 |
| Ladybayhr Ltd | Administrative & support | 2020 |
| Ladybird OFF Licence Ltd | Wholesale & retail | 2015 |
| Ladylord Limited | Real estate | 2017 |
| LAG23 Ltd | Administrative & support | 2026 |
| Lagan City Tapas Limited | Hospitality | 2026 |
| Lagan Dining House Limited | Hospitality | 2026 |
| Lago Estates Limited | Real estate | 1995 |
| Lago Investment Properties Limited | Real estate | 2006 |
| Lagom Consult Ltd | Professional & scientific | 2024 |
| Lagora NG UK Limited | Financial services | 2025 |
| Lagos Buka Ltd | Hospitality | 2025 |
| Laguna Software Ltd | Information & communication | 2019 |
| Lah-De-Dah-Dog Ltd | Other services | 2018 |
| Laicai Ltd | Hospitality | 2025 |
| Laila EDY Coaching Ltd | Professional & scientific | 2017 |
| Laird Financial Services Ltd | Financial services | 2023 |
| Laith Pallets Limited | Transport & logistics | 2025 |
| LAJ Property Ltd | Real estate | 2019 |
| Lajawab Tastee Grill Ltd | Hospitality | 2022 |
| Lake District Protection Project CIC | Agriculture & fishing | 2023 |
| Lake Property Group Ltd | Real estate | 2025 |
| Lake Property LLP | | 2019 |
| Lakehouse Capital Ltd | Professional & scientific | 2022 |
| Laker Consulting Ltd | Professional & scientific | 2024 |
| Lakeri Enterprises Ltd | Financial services | 2023 |
| Lakes Trade Centre Limited | Wholesale & retail | 2016 |
| Lakeside Bidco Limited | Other services | 2021 |
| Lakeside Topco Limited | Other services | 2021 |
| Lakhanpal Enterprises Ltd | Real estate | 2017 |
| Lakshmi Devi Ltd | Wholesale & retail | 2017 |
| Lakshmi Narasimha Properties Limited | Real estate | 2025 |
| Lala Abdul Malik Khadam-Al-Hajjaj Limited | Administrative & support | 2008 |
| Lala Building and Cleaning Ltd | Construction | 2024 |
| Lalet (Nottingham) Ltd | Real estate | 2023 |
| Lalith Private Practice Limited | Health & social care | 2025 |
| Lalli Legal Limited | Professional & scientific | 2014 |
| Lallu Ltd | Information & communication | 2010 |
| Lalo Barber Shop Ltd | Other services | 2025 |
| Lam's House Ltd | Hospitality | 2024 |
| Lamb Close Farm Limited | Agriculture & fishing | 2025 |
| Lamb's Building & Renovation Ltd | Construction | 2023 |
| Lamb's Passage Holding Limited | Financial services | 2019 |
| Lamber Construction Ltd | Construction | 2021 |
| Lambert Services Ltd | Real estate | 2017 |
| Lambley Builders Ltd | Construction | 2025 |
| Lambley Caravan Storage Limited | Transport & logistics | 2016 |
| Lambley Cleaners Ltd | Administrative & support | 2025 |
| Lambley Electrical Services Ltd | Construction | 2020 |
| Lambley Properties Limited | Real estate | 2013 |
| Lambs Building Management Ltd | Real estate | 2018 |
| Lamcote Fields Farm Limited | Real estate | 2025 |