| Little JAE Ltd | Health & social care | 2026 |
| Little JAY Ltd | Health & social care | 2024 |
| Little K-Town Ltd | Hospitality | 2023 |
| Little Kent Mews Management Company Limited | Households | 2003 |
| Little Leaf Pottery Ltd | Manufacturing | 2021 |
| Little Maltby Residents Management Company Limited | Real estate | 2026 |
| Little Peanuts Day Nursery Limited | Education | 2020 |
| Little Stonegate Yard Ltd | Hospitality | 2015 |
| Little Wolf Media Ltd | Administrative & support | 2025 |
| Little Years Nursery Ltd | Health & social care | 2022 |
| Little Yorkie Properties Limited | Real estate | 2025 |
| Littlecroft Vets Limited | Extraterritorial | 2011 |
| Littlefairs Property Company Limited | Real estate | 2018 |
| Littler York Ltd | Real estate | 2020 |
| Live for Real Limited | Real estate | 2017 |
| Live Life Therapy Services Ltd | Health & social care | 2025 |
| Live Smart Solutions Ltd | Information & communication | 2019 |
| Live Talk Limited | Administrative & support | 2000 |
| Live to Relax Ltd | Wholesale & retail | 2024 |
| Live Well Chiropractic Ltd | Health & social care | 2011 |
| Lived Insights CIC | Education | 2023 |
| Liversidge Contractors Ltd | Agriculture & fishing | 2020 |
| Living 4 Moments Ltd | Professional & scientific | 2020 |
| Living Portraits (East Riding of Yorkshire) Limited | Professional & scientific | 2022 |
| Living Portraits (West Yorkshire ) Limited | Professional & scientific | 2018 |
| Living Portraits Group Limited | Professional & scientific | 2017 |
| Living the Dream by D&E Limited | Administrative & support | 2023 |
| Livingon Care Limited | Public administration | 2023 |
| Livingston Risk Management Ltd | Information & communication | 2013 |
| Livingstone Technologies Limited | Information & communication | 2010 |
| LIZ Thomas Associates Ltd | Education | 2016 |
| Lizards EYE Limited | Arts & recreation | 2012 |
| LIZZIE180617 Limited | Extraterritorial | 2017 |
| LJ Financial Limited | Financial services | 2012 |
| LJ Web Solutions Limited | Other services | 2016 |
| LJD Construction Services Ltd | Construction | 2012 |
| LJS Technology Ltd | Information & communication | 2023 |
| LK Lifestyle Ltd | Arts & recreation | 2026 |
| LKH Assessments Ltd | Health & social care | 2022 |
| LKL Properties Ltd | Real estate | 2024 |
| Lladro (United Kingdom) Limited | Manufacturing | 1988 |
| Llanilid Management Company Limited | Households | 2019 |
| Lldsk Limited | Wholesale & retail | 2023 |
| LLE (York) Ltd. | Financial services | 2017 |
| Llenyrch Hall Limited | Financial services | 2019 |
| LLM Farm Vets (Derbyshire) Limited | Extraterritorial | 2009 |
| Lloyd and Paul Ltd | Wholesale & retail | 2024 |
| LM Ortho Ltd | Health & social care | 2024 |
| LMC Project Consulting Ltd | Information & communication | 2023 |
| Lmdc Newco Ltd | Hospitality | 2021 |
| LMH Accountancy & Bookkeeping Limited | Professional & scientific | 2015 |
| LMH Estates Ltd | Real estate | 2020 |
| LMK Investments Limited | Real estate | 2015 |
| Lmof Ltd | Real estate | 2025 |
| LMS Properties and Developments Ltd | Administrative & support | 2026 |
| LMS Waste and House Removals Ltd | Transport & logistics | 2021 |
| Lnhd Ltd. | Information & communication | 2019 |
| LNS Retail Ltd | Wholesale & retail | 2024 |
| Loaded Bait Ltd | Manufacturing | 2025 |
| Loades Developers Ltd | Construction | 2018 |
| Lobos Networking Ltd | Information & communication | 2017 |
| Local History Group Hub CIC | Information & communication | 2025 |
| Local I.T Solutions Ltd | Information & communication | 2014 |
| Local Telecom Limited | Information & communication | 2021 |
| Locales Through the Lens Ltd | Administrative & support | 2024 |
| Locke Heating Solutions Ltd | Construction | 2021 |
| Locker 26 Ltd | Wholesale & retail | 2024 |
| Lockey Farming Limited | Agriculture & fishing | 2020 |
| Locking Castle Limited | Extraterritorial | 1990 |
| Locksafe York Ltd | Other services | 2020 |
| Locon Equestrian Limited | Arts & recreation | 2024 |
| Lodes Sunset Ltd | Wholesale & retail | 2025 |
| Lodge Cottage Farm Shops Ltd | Wholesale & retail | 2022 |
| Lodge Farm Cundall Limited | Hospitality | 2024 |
| Lodge Farm Gardens Management Company Limited | Real estate | 2009 |
| Lodhia&Lodhia Limited | Real estate | 2025 |
| Lofthouse Homes Limited | Construction | 2014 |
| Lofthouse Management Limited | Real estate | 2016 |
| Logavatu Property Group Ltd | Real estate | 2025 |
| Logic Systems & Control Limited | Information & communication | 2006 |
| Logisystems Limited | Administrative & support | 2024 |
| Logopak International Limited | Manufacturing | 1988 |
| Logserv Limited | Professional & scientific | 1995 |
| Lokle Ltd | Information & communication | 2023 |
| Lola Design Limited | Information & communication | 2012 |
| Lola Sleep Limited | Wholesale & retail | 2019 |
| Lola Sport Limited | Manufacturing | 2025 |
| Londesborough Court Limited | Health & social care | 2002 |
| Londesborough Ltd | Agriculture & fishing | 2019 |
| London and Manchester Group Limited | Financial services | 1981 |
| London Ebor Developments Limited | Construction | 1987 |
| London Ebor LLP | | 2010 |
| London Gazebo Hire Limited | Hospitality | 2023 |
| London North Eastern Railway Limited | Transport & logistics | 2003 |
| London York Fund Managers Limited | Professional & scientific | 1980 |
| Londons Management Company Limited | Households | 2017 |
| Lone Star Land Limited | Real estate | 2010 |
| Lone Wolf & CUB Ltd | Wholesale & retail | 2022 |
| Loneconnect Limited | Information & communication | 2025 |
| Loney Consultancy Ltd | Professional & scientific | 2023 |