| THE Islay Whisky Co Limited | Professional & scientific | 2007 |
| THE IT Gentleman Ltd | Wholesale & retail | 2018 |
| THE Jazz Clean Ltd | Administrative & support | 2019 |
| THE JC Skin Concept Ltd | Arts & recreation | 2022 |
| THE Jeweller's Loupe Ltd | Manufacturing | 2017 |
| THE Jewish Stand Ltd | Information & communication | 2024 |
| THE Joiner Leeds Ltd | Construction | 2025 |
| THE Jolly Landscaping Company Limited | Administrative & support | 2020 |
| THE Jolly Property Company Limited | Real estate | 2019 |
| THE Jonathan Martin Partnership Limited | Real estate | 2014 |
| THE Joyce of Cleaning Limited | Administrative & support | 2025 |
| THE K9 Hub Ltd | Other services | 2014 |
| THE Kaleidoscope Collective Ltd | Construction | 2021 |
| THE Kash Team Ltd | Professional & scientific | 2014 |
| THE Kassapians Management Company Limited | Households | 2007 |
| THE Keep Fighting Collective Limited | Information & communication | 2025 |
| THE Kennel Company (Yorkshire) Ltd | Manufacturing | 2026 |
| THE Kennel Craft Co Ltd | Manufacturing | 2026 |
| THE Kennel Manufacturer Ltd | Manufacturing | 2026 |
| THE Key Club Leeds Limited | Hospitality | 2021 |
| THE Key Team Trade Ltd | Professional & scientific | 2022 |
| THE Kiln (Selborne) Management Company Limited | Extraterritorial | 2006 |
| THE Kinetic Universe Ltd | Arts & recreation | 2025 |
| THE Kirk Group Ltd | Financial services | 2024 |
| THE Kitchenco (7) Ltd | Wholesale & retail | 2018 |
| THE Knap (Barry) LLP | | 2005 |
| THE Knit Factory Limited | Manufacturing | 2025 |
| THE Knot Collective Manchester Limited | Manufacturing | 2018 |
| THE Knowledge Project CIC | Education | 2021 |
| THE Komp Ltd | Wholesale & retail | 2024 |
| THE Label & Print Co Limited | Manufacturing | 2004 |
| THE Ladybird Project Limited | Education | 2008 |
| THE Lairgate in Beverley Limited | Hospitality | 1999 |
| THE Lambda Factory Ltd | Information & communication | 2017 |
| THE Lamination Station Ltd | Manufacturing | 2026 |
| THE Land Hub Limited | Real estate | 2024 |
| THE Landlord Shop Limited | Professional & scientific | 2005 |
| THE Lantern Learning Trust (Inner City North, Leeds) | Education | 2013 |
| THE Lara Izmir Ltd | Hospitality | 2023 |
| THE Larkfields Rawdon Management Company Limited | Households | 2000 |
| THE Last Journey Vetcare Ltd | Professional & scientific | 2026 |
| THE Last Quarter Limited | Education | 2024 |
| THE Last Supper Grazing Limited | Hospitality | 2021 |
| THE Later Life Club Holdings Limited | Financial services | 2020 |
| THE Lavender Library Limited | Wholesale & retail | 2026 |
| THE Lavender PUB Ltd | Other services | 2009 |
| THE Lawns Farm Ltd | Real estate | 2025 |
| THE Leaf Label Limited | Manufacturing | 2002 |
| THE Lease Consultancy Ltd | Professional & scientific | 2024 |
| THE Leeds Clinic Limited | Health & social care | 2019 |
| THE Leeds Clinic Skin Centre Ltd | Health & social care | 2022 |
| THE Leeds East Primary Partnership: a Co-Operative Trust | Education | 2012 |
| THE Leeds Eruv | Other services | 2019 |
| THE Leeds Hamper Company Ltd | Wholesale & retail | 2024 |
| THE Leeds Handymen Ltd | Construction | 2022 |
| THE Leeds Jewish Free School | Education | 2011 |
| THE Leeds Knee Clinic Limited | Health & social care | 2022 |
| THE Leeds Law Firm Limited | Professional & scientific | 2010 |
| THE Leeds Learning Alliance | Education | 2019 |
| THE Leeds Library | Arts & recreation | 2005 |
| THE Leeds Neurology Clinic Limited | Health & social care | 2013 |
| THE Leeds North West Education Partnership | Education | 2012 |
| THE Leeds Plug & Deli Limited | Wholesale & retail | 2023 |
| THE Leeds Postal Service Ltd | Hospitality | 2016 |
| THE Leeds Prostate Clinic Limited | Health & social care | 2012 |
| THE Leeds Rifleman Limited | Hospitality | 2024 |
| THE Leeds School Services Limited | Other services | 2016 |
| THE Leeds School of English Ltd | Education | 2012 |
| THE Leeds School of English Yorkshire Limited | Other services | 2017 |
| THE Leeds Society for Deaf & Blind People | Education | 1917 |
| THE Leeds Sofa Co. Ltd. | Manufacturing | 2009 |
| THE Leeds Triathlon Centre Limited | Arts & recreation | 2018 |
| THE Leeds United Foundation | Arts & recreation | 2010 |
| THE Legal Advice Group Ltd | Professional & scientific | 2020 |
| THE Legal Help Centre Limited | Professional & scientific | 2020 |
| THE Leon Family Investment Company Limited | Financial services | 2022 |
| THE Letting DOT Ltd | Real estate | 2026 |
| THE Leyland Sports Association | Arts & recreation | 2006 |
| THE Liberty Healthcare Group Ltd | Health & social care | 2022 |
| THE Lick Hairdressing Supplies Limited | Wholesale & retail | 2009 |
| THE Lidgett Lane Hand Car Wash Limited | Other services | 2017 |
| THE Lifestyle Advisory Limited | Other services | 2024 |
| THE Lightbulb Moment PDA CIC | Professional & scientific | 2020 |
| THE Limes (South Milford) Management Company Limited | Real estate | 2007 |
| THE Lippy People Charitable Trust | Other services | 2012 |
| THE Little Biscuit Pottery Painting Studio Limited | Arts & recreation | 2021 |
| THE Little Bookshop Limited | Wholesale & retail | 2017 |
| THE Little Cake Cottage Limited | Manufacturing | 2018 |
| THE Little Flower Studio Ltd | Wholesale & retail | 2026 |
| THE Little Ladoo Boutique Ltd | Wholesale & retail | 2026 |
| THE Little Laser Queen Limited | Other services | 2023 |
| THE Little Print Gift Shop Ltd | Manufacturing | 2024 |
| THE Little Red HUT Ltd | Manufacturing | 2016 |
| THE Little Terrace Ltd | Arts & recreation | 2026 |
| THE Live Organisation Limited | Real estate | 1996 |
| THE Lobby Group Limited | Hospitality | 2019 |
| THE Local Investors Ltd | Real estate | 2023 |
| THE Local Marketing Team Ltd | Professional & scientific | 2017 |
| THE Loft Bar Leeds Limited | Hospitality | 2025 |
| THE LOG Lady Leeds Limited | Wholesale & retail | 2022 |