| IN & OUT Cleaning Services Limited | Administrative & support | 2023 |
| IN a Jiffy Ltd | Wholesale & retail | 2013 |
| IN Good Co Leeds Ltd | Arts & recreation | 2021 |
| IN Health Medical Ltd | Health & social care | 2020 |
| IN House Coffee Limited | Wholesale & retail | 2021 |
| IN League Sports Management Limited | Arts & recreation | 2020 |
| IN Line Health and Beauty Limited | Manufacturing | 1997 |
| IN One Worldwide Limited | Professional & scientific | 1995 |
| IN OUT Solutions Ltd | Construction | 2013 |
| IN Place (Coombe) Limited | Real estate | 2021 |
| IN Property WE Believe Limited | Real estate | 2021 |
| IN the Box LS14 Ltd | Hospitality | 2024 |
| IN the Meantime Solutions Ltd | Professional & scientific | 2024 |
| IN Touch Health and Healing CIC | Other services | 2013 |
| In-Fluency Education Ltd | Education | 2025 |
| In-Form Consult Ltd. | Information & communication | 1995 |
| In-House Collective Limited | Professional & scientific | 2024 |
| IN-OV-8 DIY Limited | Wholesale & retail | 1998 |
| In-Spec Construction Systems Ltd | Professional & scientific | 2024 |
| In-Yu Ltd | Professional & scientific | 2022 |
| IN2MATE Ltd | Manufacturing | 2017 |
| IN4MATEC Limited | Information & communication | 2022 |
| INA Training Academy Ltd | Other services | 2025 |
| Inaya Properties Leeds Limited | Construction | 2026 |
| Inaya Retail Limited | Other services | 2020 |
| Inbar Finance Services Ltd | Professional & scientific | 2021 |
| Inbrackets Limited | Wholesale & retail | 2019 |
| Inca Software Ltd | Information & communication | 2021 |
| Incatek Consultancy Limited | Information & communication | 2023 |
| Incentive Limited | Other services | 1993 |
| Incentive Marketing Group Limited | Administrative & support | 2023 |
| Inceptive Films Limited | Information & communication | 2024 |
| Inceptiveo Limited | Information & communication | 2025 |
| Inchakkal Properties UK Ltd | Real estate | 2022 |
| Inches Health & Beauty (Leeds) Ltd | Health & social care | 2025 |
| Inchford Surgery Limited | Health & social care | 2024 |
| Inchoatus Ltd | Information & communication | 2025 |
| Inclinic Training Ltd | Other services | 2016 |
| Incloud Accounting Limited | Information & communication | 2011 |
| Inclusicares Ltd | Wholesale & retail | 2025 |
| Inclusion North Community Interest Company | Education | 2008 |
| Inclusion Today Limited | Information & communication | 2024 |
| Inclusive Health Access C.I.C. | Health & social care | 2026 |
| Inclusophy Ltd | Professional & scientific | 2025 |
| Incognito Intelligence Ltd | Information & communication | 2025 |
| Incontinence Shop Limited | Wholesale & retail | 2011 |
| Incorporated Insurance Group Limited | Financial services | 2012 |
| Incorporated Leeds Church Extension Society(The) | Other services | 1905 |
| Incorvia Accountor Finago Limited | Professional & scientific | 2021 |
| Incorvia Partners Limited | Wholesale & retail | 2025 |
| Incotec Profiles Limited | Wholesale & retail | 2013 |
| Incredaboil Ltd | Construction | 2023 |
| Incredere Limited | Construction | 2024 |
| Incredible Business Websites Limited | Professional & scientific | 2015 |
| Incredible Content Limited | Professional & scientific | 2017 |
| Incredible Edible Leeds C.I.C. | Other services | 2022 |
| Increment Agency Ltd | Professional & scientific | 2020 |
| Incubating Arts CIC | Education | 2019 |
| Indalo Care Ltd | Health & social care | 2022 |
| Indemand Shoes & Clothing Ltd | Wholesale & retail | 2025 |
| Indemnity and Trade Ltd | Financial services | 2025 |
| Indene Solutions Limited | Administrative & support | 2018 |
| Indenovo Global Search & Selection Limited | Administrative & support | 2021 |
| Independent Consultancy Group Ltd | Professional & scientific | 2023 |
| Independent Electrical Ltd | Energy | 2020 |
| Independent Forensic Accounting Limited | Professional & scientific | 2008 |
| Independent House (Management) Limited | Households | 2002 |
| Independent Labour Publications Trust Limited | Information & communication | 1915 |
| Independent Marketing and Promotion Limited | Professional & scientific | 1986 |
| Independent Mortgage Brokers Limited | Financial services | 2017 |
| Independent Shelving Co. Limited | Wholesale & retail | 1984 |
| Independent VAT Consultants Limited | Administrative & support | 1993 |
| Indepth Civil Engineering Limited | Extraterritorial | 2020 |
| Indepth Civil Engineering Services Limited | Construction | 2002 |
| Indepth Plant Hire Limited | Administrative & support | 2013 |
| Indergaard Physiotherapy Limited | Health & social care | 2011 |
| Indescon Limited | Wholesale & retail | 1969 |
| Indexa Ltd | Professional & scientific | 2022 |
| Indi Ltd | Manufacturing | 2024 |
| Indi Wrap Limited | Manufacturing | 2020 |
| Indi's Leeds Ltd | Hospitality | 2025 |
| India House Trading Limited | Information & communication | 2025 |
| Indian Chef AA Ltd | Hospitality | 2026 |
| Indian Fusion Leeds Limited | Hospitality | 2016 |
| Indian Kirana Limited | Wholesale & retail | 2024 |
| Indian Pakwaan Ltd | Hospitality | 2022 |
| Indian Spice (Gildersome) Limited | Hospitality | 2015 |
| Indian Spice (Swillington) Ltd | Hospitality | 2021 |
| Indian Tiffin Room Leeds Ltd | Hospitality | 2017 |
| Indie Children's Author Network Ltd | Information & communication | 2026 |
| Indie Game JOE Limited | Administrative & support | 2020 |
| Indie Trade Ltd | Information & communication | 2012 |
| Indiebox Studios Ltd | Information & communication | 2021 |
| Indigo & Paper Ltd | Wholesale & retail | 2025 |
| Indigo Car and Van Hire Ltd | Administrative & support | 2009 |
| Indigo Executive Travel Limited | Transport & logistics | 2013 |
| Indigobravo Limited | Information & communication | 2016 |
| Indrive Solutions Ltd | Wholesale & retail | 2025 |
| Indue Healthcare Limited | Administrative & support | 2021 |
| Indue Properties Ltd | Real estate | 2025 |