| Housing Solutions for YOU Limited | Construction | 2026 |
| HOW 2 Engineering Ltd | Professional & scientific | 2019 |
| Howard Stott Group Holdings Limited | Financial services | 2020 |
| Howarth Chellow F Limited | Health & social care | 2025 |
| Howarth Landscapes Ltd | Administrative & support | 2021 |
| Howarths Estates Limited | Real estate | 2014 |
| Howe Joinery Limited | Manufacturing | 2019 |
| Howells Electrical Services Limited | Construction | 2016 |
| Howes (Burnley) Limited | Wholesale & retail | 2011 |
| HP Motors (North West) Ltd | Wholesale & retail | 2023 |
| HR BRN MCR Ltd | Administrative & support | 2026 |
| HR IT Consultancy Ltd | Information & communication | 2025 |
| HR Logistics Burnley Ltd | Transport & logistics | 2024 |
| HR Properties Nelson Limited | Real estate | 2016 |
| HRC Construction London Ltd | Construction | 2024 |
| HRD Derwent House Management Company Limited | Administrative & support | 2010 |
| HRK Management Limited | Professional & scientific | 2011 |
| HRS Development Group Limited | Real estate | 2021 |
| HSC (International) Limited | Transport & logistics | 2020 |
| HT Ltd | Wholesale & retail | 2025 |
| HTS Landscapes and Tree Services Limited | Administrative & support | 2020 |
| Huab Ltd | Health & social care | 2013 |
| Hubie ST Plumbing Warehouse Limited | Wholesale & retail | 2004 |
| Huckerby Hotels Limited | Hospitality | 2024 |
| Hudson&Hounds Limited | Other services | 2024 |
| Hugford Construction Ltd | Construction | 2022 |
| Hughes & Isherwood Properties Ltd | Real estate | 2025 |
| Hughes Joinery and Plumbing Limited | Construction | 2025 |
| Hungry Jacks Diner Ltd | Hospitality | 2024 |
| Hunters Oak Ltd | Agriculture & fishing | 2013 |
| Hunters Target Sports Ltd | Arts & recreation | 2024 |
| Huntley Group Limited | Water & waste | 2021 |
| Hurst Family Holdings Ltd | Financial services | 2026 |
| Hurstwood Management Consultants Ltd | Administrative & support | 2016 |
| Hussain Architectural Design Limited | Professional & scientific | 2012 |
| Hutch Engineering Ltd | Professional & scientific | 2021 |
| HV Consultancy Ltd | Professional & scientific | 2021 |
| HYA NW Ltd | Wholesale & retail | 2025 |
| Hybrid Management Services Limited | Professional & scientific | 2022 |
| Hybrid Vehicle Rentals Ltd | Administrative & support | 2025 |
| Hydanis Limited | Manufacturing | 2011 |
| Hydraline Water Treatment Limited | | 1988 |
| Hydrogen Heating (NW) Ltd | Construction | 2020 |
| Hygienic Plastic Supplies Limited | Construction | 2015 |
| Hyped Sneakers Limited | Wholesale & retail | 2018 |
| Hypezero Limited | Information & communication | 2013 |
| Hyvin Collective Ltd | Administrative & support | 2025 |
| HZ Corp Limited | Wholesale & retail | 2024 |
| I & KW Planning Ltd | Professional & scientific | 2024 |
| I & S Newsagents Limited | Wholesale & retail | 2003 |
| I G Todd Ltd | Wholesale & retail | 2000 |
| I Q Care Solutions Ltd | Health & social care | 2021 |
| I S Innovations Ltd | Professional & scientific | 2024 |
| I'M Moving to Mars Ltd | Wholesale & retail | 2019 |
| I-Pro Football Ltd | Wholesale & retail | 2008 |
| I. Fisk Joiners Limited | Construction | 2003 |
| I.C.T.V. Sales and Services Limited | Manufacturing | 1980 |
| I4 Rewards Ltd | Professional & scientific | 2024 |
| I4-TECH Ltd | Manufacturing | 2020 |
| IAB Foods Ltd | Hospitality | 2025 |
| Iain Bruce Deliveries Ltd | Transport & logistics | 2012 |
| IAN Mankin Limited | Wholesale & retail | 1983 |
| IAN Metcalfe SMC Ltd | Construction | 2024 |
| IAN Stirzaker Ltd | Construction | 2011 |
| IAR22 Ltd | Financial services | 2023 |
| IAZ Acquisitions Limited | Real estate | 2025 |
| Ibbys Brother Ltd | Wholesale & retail | 2026 |
| IBG Consulting Ltd | Administrative & support | 2021 |
| Ibhm Traders Ltd | Wholesale & retail | 2026 |
| Ibisim Ltd | Wholesale & retail | 2024 |
| IBK Distribution Ltd | Wholesale & retail | 2020 |
| Ican Support Limited | Information & communication | 2010 |
| Icare Solutions Burnley Ltd | Health & social care | 2018 |
| Iceberg Supplements Burnley Ltd | Hospitality | 2017 |
| ICG Solution Ltd | Other services | 2016 |
| Icheck 247 Ltd | Information & communication | 2015 |
| Icon Automotives Limited | Wholesale & retail | 2022 |
| Icon Barbers (Burnley) Ltd | Other services | 2020 |
| Icon Flexpack Group Ltd | Financial services | 2022 |
| ICU Security & Electrical Services Ltd | Construction | 2019 |
| Ideal Kitchens and Bedrooms Burnley Ltd | Manufacturing | 2025 |
| IF Mart Ltd | Wholesale & retail | 2023 |
| Ightenhill Mini Market 1 Limited | Wholesale & retail | 2025 |
| Iglazespecs Ltd | Wholesale & retail | 2021 |
| Igloohouseuk Limited | Construction | 2021 |
| Igovika Limited | Transport & logistics | 2018 |
| IH Essentials Ltd | Wholesale & retail | 2025 |
| Ihson Computers Ltd | Other services | 2014 |
| IJS Ventures Ltd | Construction | 2015 |
| IK Executive Limited | Transport & logistics | 2023 |
| IK-7 Ltd | Hospitality | 2014 |
| IL Paradiso Seli Ltd | Hospitality | 2013 |
| ILS Holdings Ltd | Financial services | 2019 |
| Ilyas Advisory Service Ltd | Professional & scientific | 2025 |
| IM Lancashire Properties Ltd | Real estate | 2018 |
| Imaan & Tunisaa Beauty Secrets Limited | Other services | 2023 |
| Imaan Travel Ltd | Administrative & support | 2021 |
| Image Commercial Ltd | Wholesale & retail | 2012 |
| Imbas Limited | Professional & scientific | 2008 |
| Imogem Crystals Limited | Wholesale & retail | 2026 |