| Historia Normannis Ltd | Arts & recreation | 2016 |
| Hodges (North West) Limited | Construction | 1995 |
| Hoeys Caravans Ltd | Wholesale & retail | 2013 |
| Hoeys Leisure Limited | Wholesale & retail | 2011 |
| Holdings BRC Ltd | Administrative & support | 2022 |
| Holt Bespoke Joinery Ltd | Construction | 2021 |
| Homestyle Carpets by Morrow Limited | Wholesale & retail | 2005 |
| Honey Tree Cuisine Limited | Hospitality | 2023 |
| Hospitality Training Solutions Limited | Education | 2016 |
| Hotbox Wellness Limited | Arts & recreation | 2023 |
| House of Lamb Properties Ltd | Real estate | 2025 |
| House of Phillips Ltd | Hospitality | 2023 |
| Howard Groundworks Ltd | Construction | 2026 |
| Howard Hooper Limited | Administrative & support | 2003 |
| Hughes Consortium Ltd | Information & communication | 2014 |
| Hunkydory Homes Limited | Real estate | 2018 |
| Huntston Limited | Administrative & support | 2006 |
| Hyfire Limited | Public administration | 2011 |
| I.N. Spin Limited | Hospitality | 2026 |
| I4TALENT Sports Management Ltd | Arts & recreation | 2023 |
| IAN Anthony Auto Repairs Limited | Wholesale & retail | 2009 |
| IAN Doherty ASK Roofing Ltd | Construction | 2022 |
| IAN Frampton & SON Limited | Construction | 2007 |
| Ibay Homes Limited | Real estate | 2011 |
| Ignite Business Training Limited | Professional & scientific | 2023 |
| IJK Technology Ltd | Information & communication | 2014 |
| Ikigai Factory Limited | Information & communication | 2017 |
| IN Touch Limited | Information & communication | 1996 |
| Indelity Golf Limited | Wholesale & retail | 2022 |
| Indison Events Limited | Other services | 2014 |
| Infinite Financial Planning Limited | Professional & scientific | 2019 |
| Infinity N.C.Y Ltd | Professional & scientific | 2013 |
| Infinity Strength and Conditioning Ltd | Arts & recreation | 2021 |
| Inner Essence Ltd | Other services | 2023 |
| Inner TEN Archery Limited | Wholesale & retail | 2025 |
| Innerverse Limited | Professional & scientific | 2025 |
| Innuendo Limited | Hospitality | 2020 |
| Inspiration Heysham Limited | Arts & recreation | 2014 |
| Inspire Business Coaching Ltd | Professional & scientific | 2020 |
| Inspired Achievements (IA) Ltd | Real estate | 2019 |
| Intelligent Support Services Limited | Professional & scientific | 2021 |
| Intergrab Limited | Transport & logistics | 2008 |
| International Clearance Group Ltd | Wholesale & retail | 2013 |
| Interora Trading Ltd | Wholesale & retail | 2025 |
| Investment Point Limited | Transport & logistics | 2005 |
| Isaakfbm Limited | Professional & scientific | 2024 |
| Isjackwild Ltd | Information & communication | 2018 |
| Ivatt Atlantic Property Holdings Limited | Real estate | 2022 |
| Ivythwaite Lodge Limited | Hospitality | 2017 |
| J & D Mellor Ltd | Construction | 2002 |
| J & S Homestyle Limited | Construction | 2008 |
| J & S Properties (Morecambe) Ltd | Real estate | 2014 |
| J and G C Developments Limited | Real estate | 2018 |
| J Hallam Building Services Limited | Construction | 2013 |
| J L Brown & Sons Ltd | Construction | 2019 |
| J M Casson Building Services Ltd | Construction | 2018 |
| J O D Parks Limited | Hospitality | 2021 |
| J R Lowes Limited | Professional & scientific | 2003 |
| J R Wharton and Sons Limited | Construction | 2001 |
| J Sheridan Limited | Wholesale & retail | 2020 |
| J W Fire Installations (North West) Limited | Public administration | 2025 |
| J Williams Group Limited | Wholesale & retail | 2025 |
| J Wilson Holdings Limited | Financial services | 2019 |
| J& R Healthcare Limited | Health & social care | 2017 |
| J&F Automotive Ltd | Wholesale & retail | 2025 |
| J&F Parkhomes Ltd | Real estate | 2025 |
| J&R (Morecambe) Limited | Financial services | 2013 |
| J.A.K Lettings Ltd | Real estate | 2023 |
| J.Dixon Plumbing & Heating Services Ltd | Construction | 2021 |
| J.M. Gorry & SON Limited | Transport & logistics | 1986 |
| J.P. Auto Diagnostic Ltd | Wholesale & retail | 2020 |
| J.W. Pools and Plant Rooms Ltd | Construction | 2017 |
| Jack Pyle Plumbing & Heating Limited | Construction | 2022 |
| Jacksmmb Ltd | Wholesale & retail | 2024 |
| Jacs Holdings Ltd | Real estate | 2021 |
| JAF & NAQ Services Ltd | Wholesale & retail | 2025 |
| Jake and Elise Footcare Ltd | Health & social care | 2025 |
| James Ainley Limited | Professional & scientific | 2012 |
| James Cat Ltd. | Information & communication | 2014 |
| James Hacking (Yellow Rose Coaches) Limited | Transport & logistics | 1947 |
| James Wilson Holdings Limited | Financial services | 2024 |
| Jan's Mobile Cat Grooming Ltd | Professional & scientific | 2022 |
| Jason Dring Building & Landscaping Ltd | Construction | 2021 |
| JB Bespoke Joinery Ltd | Construction | 2019 |
| JBR Fire Compliance Ltd | Professional & scientific | 2026 |
| JC Telecoms Services Limited | Information & communication | 2016 |
| JCS Trade Sales Ltd | Extraterritorial | 2010 |
| JDS Building Ltd | Construction | 2025 |
| JDS Enterprises Group Limited | Administrative & support | 2018 |
| Jessops Estate Agents (Morecambe) Limited | Real estate | 2023 |
| Jessops Estate Agents Limited | Real estate | 2021 |
| JGC Building & Maintenance (NW) Ltd | Construction | 2026 |
| JGC Construction (NW) Ltd | Construction | 2022 |
| JH Food Trading Ltd | Hospitality | 2017 |
| JH Homes (Cumbria) Limited | Real estate | 2018 |
| JH Properties (Cumbria) Limited | Real estate | 2026 |
| Jhge Holdings UK Ltd | Financial services | 2026 |
| Jigsaw PFM Ltd | Construction | 2012 |
| Jing JAI Limited | Other services | 2016 |
| JJF Property Investments Ltd | Real estate | 2026 |