| Lightning Consultants Limited | Construction | 2000 |
| Lightning Electric Services Ltd | Manufacturing | 2023 |
| Lightning Engineering Ltd | Manufacturing | 2025 |
| Lightning Protection UK Limited | Construction | 2017 |
| Lightning.Strike Limited | Construction | 2010 |
| Lightordark Transporta Limited | Transport & logistics | 2025 |
| Lights by Lewis Ltd | Administrative & support | 2025 |
| Lightstriver Limited | Professional & scientific | 2020 |
| Lightwater Valley Attractions Limited | Arts & recreation | 2000 |
| Lightweight Structural Composite Panels Technologies Ltd | Manufacturing | 2020 |
| Lightwerk Media UK Ltd | Professional & scientific | 2025 |
| Lightwood Services Ltd | Construction | 2022 |
| Lightyear Electrical Limited | Construction | 2021 |
| Ligna Components Limited | Manufacturing | 2014 |
| Like Green Nottm Limited | Administrative & support | 2016 |
| Lilac Eatery (Friar Lane) Limited | Hospitality | 2024 |
| Lilac Eatery Limited | Hospitality | 2022 |
| Lilac Gecko PR Limited | Administrative & support | 2010 |
| Lilac Grove Auto Centre Ltd | Wholesale & retail | 2006 |
| Lildiff Ltd | Wholesale & retail | 2023 |
| Lileikis Property Ltd | Real estate | 2025 |
| Lilies Cleaning Company Ltd | Administrative & support | 2024 |
| Lilith Angels Ltd | Professional & scientific | 2023 |
| Lilley Pads Ltd | Real estate | 2025 |
| Lillie Building Company Limited | Construction | 2020 |
| Lilly of the Vale Ltd | Hospitality | 2025 |
| Lilly's Space Ltd | Real estate | 2024 |
| Lilo Sisters Ltd | Financial services | 2021 |
| Lilpotsflips Ltd | Wholesale & retail | 2025 |
| Lilto Properties Limited | Real estate | 2018 |
| Lily & Co Limited | Administrative & support | 2012 |
| Lily Software Development Limited | Information & communication | 2024 |
| Lily Transport Ltd | Transport & logistics | 2021 |
| Lily-Rose Healthcare Ltd | Health & social care | 2026 |
| Lilyarch Ltd | Professional & scientific | 2023 |
| Lilycom Ltd | Real estate | 2024 |
| Limba Limited | Administrative & support | 2024 |
| Lime I.T. and Media Solutions Limited | Information & communication | 2006 |
| Lime Sun Solutions UK Ltd | Wholesale & retail | 2012 |
| Lime Tree Services & Landscape Ltd | Agriculture & fishing | 2025 |
| Lime Tree Surgery Limited | Real estate | 2014 |
| Lime-Circle Ltd | Construction | 2011 |
| Limekiln Fish Limited | Hospitality | 2020 |
| Limelight Magazine Ltd | Information & communication | 2021 |
| Limelight Plus Integrated Media Ltd | Hospitality | 2024 |
| Limelite Property Ltd | Real estate | 2024 |
| Limeys Ltd | Wholesale & retail | 2025 |
| Limi Skin Ltd | Professional & scientific | 2020 |
| Liminal Housing CIC | Health & social care | 2026 |
| Limitless Fire & Security Ltd | Construction | 2024 |
| Limitless Systems Ltd | Construction | 2024 |
| Limitless TK Limited | Public administration | 2023 |
| Limo G Limited | Manufacturing | 2019 |
| Limuk Ltd | Health & social care | 2020 |
| LIN Nails Ltd | Other services | 2022 |
| Lina Properties and Investment Ltd | Real estate | 2022 |
| Linacres Properties Ltd | Real estate | 2025 |
| Linaptr Ltd | Transport & logistics | 2025 |
| Linby Farm Catering Ltd | Hospitality | 2025 |
| Linby Management Limited | Households | 2018 |
| Linby Vans Ltd | Wholesale & retail | 2018 |
| Lincoln Business Finance Limited | Extraterritorial | 2013 |
| Lincoln Green Public House Company Limited | Hospitality | 2014 |
| Lincoln Lime Limited | Construction | 2014 |
| Lincoln Villas Limited | Extraterritorial | 2007 |
| Lincolnshire Swim School LLP | | 2013 |
| Lincs Thermal Ltd | Construction | 2025 |
| Lincscan Limited | Professional & scientific | 2008 |
| Lind Hutch Holdings Ltd | Real estate | 2022 |
| Lind Hutch Ltd | Real estate | 2022 |
| Lind Hutch Two Ltd | Hospitality | 2022 |
| Lind Services Ltd | Wholesale & retail | 2023 |
| Linda Williams Properties Ltd | Households | 2021 |
| Linden Court (Beeston) Limited | Households | 1982 |
| Linden Environmental Ltd | Professional & scientific | 2025 |
| Linden House (Nottingham) Management Limited | Real estate | 1975 |
| Lindensium Developments Ltd | Construction | 2018 |
| Lindley's Auto Centres Limited | Wholesale & retail | 2003 |
| Lindleys Group Limited | Professional & scientific | 2014 |
| Lindsay Finance Limited | Financial services | 2003 |
| Lindsay Through the Looking Glass Ltd | Health & social care | 2025 |
| Line and DOT Creative Ltd | Professional & scientific | 2014 |
| Line Equipment Limited | Professional & scientific | 2000 |
| Line Equipment Property Co Limited | Real estate | 2009 |
| Line Nilsen Studio Ltd | Arts & recreation | 2024 |
| Linear Brewing Company Limited | Manufacturing | 2015 |
| Linear Ceramic Tiling Ltd | Construction | 2024 |
| Linear Developments (Nottingham) Ltd | Construction | 2007 |
| Linear Diagnostics Limited | Manufacturing | 2011 |
| Linear Insulation Limited | Construction | 2006 |
| Lineform AI Ltd | Professional & scientific | 2026 |
| Lineform Limited | Professional & scientific | 2009 |
| Lineside Fencing & Civils Limited | Construction | 2017 |
| Lineside Infrastructure Limited | Construction | 2008 |
| Linestyle Limited | Professional & scientific | 2012 |
| Linford Brands Limited | Wholesale & retail | 2024 |
| Lingeer Lingerie Ltd | Wholesale & retail | 2024 |
| Lings Lane Riding Stables Limited | Arts & recreation | 2003 |
| Lington Global Ventures Ltd | Wholesale & retail | 2025 |
| Lingualis Global Ltd | Professional & scientific | 2025 |