| H.B. Fuller U.K. Holding Ltd | Financial services | 2021 |
| H.B. Fuller U.K. Limited | Administrative & support | 1997 |
| H.B. Fuller U.K. Manufacturing Limited | Manufacturing | 2001 |
| Halcyon Aviation Limited | Transport & logistics | 1990 |
| Hamsard 3791 Limited | Extraterritorial | 2024 |
| Happy Dogs Daycare Ltd | Other services | 2017 |
| Hardshelfco 132 Limited | Extraterritorial | 2002 |
| Harrison & Williams Mercantile Limited | Professional & scientific | 2020 |
| HBI Sheet Piling & Welding Solutions Limited | Manufacturing | 2025 |
| HDM Autos Ltd | Wholesale & retail | 2024 |
| Heat Locker Limited | Construction | 2020 |
| Heat Pump Life Limited | Construction | 2021 |
| Herb & Spice Catering Ltd | Hospitality | 2022 |
| Hexpol Compounding (UK) Limited | Manufacturing | 2004 |
| Hexpol Manchester Ltd | Manufacturing | 1953 |
| Higher Hills Limited | Hospitality | 2025 |
| HIT the Record Ltd | Information & communication | 2025 |
| Hive Auctions Ltd. | Real estate | 2024 |
| Hive Retail Group Ltd | Wholesale & retail | 2024 |
| HMG (North West) Limited | Real estate | 2024 |
| Holiday Catchers Ltd | Administrative & support | 2026 |
| Hollygrange House Ltd | Hospitality | 2018 |
| Hope Olivia Coaching Limited | Other services | 2026 |
| Hornet Alarms Limited | Administrative & support | 2004 |
| Hosted Phones Limited | Administrative & support | 2011 |
| HR Logistics and Recovery Ltd | Wholesale & retail | 2025 |
| Hr-Global Connexions Ltd | Professional & scientific | 2025 |
| HRM Leisure Limited | Hospitality | 2024 |
| HTF Tyre Fitting Services Limited | Wholesale & retail | 2015 |
| HTF Tyreservices Limited | Wholesale & retail | 2006 |
| Hussain PVT Limited | Other services | 2014 |
| I S R Properties Ltd | Real estate | 2026 |
| IAN Martin Construction Limited | Construction | 2008 |
| IAN Price Consultancy Limited | Wholesale & retail | 2013 |
| Ibra’S Cars Ltd | Wholesale & retail | 2025 |
| Icutv Limited | Administrative & support | 2018 |
| Igme London Ltd | Wholesale & retail | 2026 |
| IH Park Ltd | Administrative & support | 2025 |
| IJJA06 Limited | Wholesale & retail | 2020 |
| Imafi Limited | Health & social care | 2022 |
| Impetus Security and Facilities Management Limited | Real estate | 2021 |
| Imran Chaudhary Ltd | Wholesale & retail | 2025 |
| IN Touch Property Ltd | Construction | 2023 |
| Inassa Ltd | Hospitality | 2025 |
| Indypendent Living Ltd | Households | 2026 |
| Infectious Limited | Arts & recreation | 2020 |
| Infinity Marketing & Management Ltd | Professional & scientific | 2024 |
| Infinity Support Services C.I.C. | Health & social care | 2024 |
| Influencing Optics Ltd | Professional & scientific | 2022 |
| Information Management Squared Limited | Professional & scientific | 2023 |
| Inspire Consultant (Dukinfield) Limited | Administrative & support | 2015 |
| Inspire Property L Ltd | Real estate | 2026 |
| Instyle Kitchen & Bedrooms Ltd | Manufacturing | 2019 |
| International Digital Consulting Ltd | Information & communication | 2021 |
| IRS Security Services Ltd | Administrative & support | 2020 |
| Ishrat Parveen Ltd | Wholesale & retail | 2024 |
| J H Neal Greengrocers (Romiley) Limited | Wholesale & retail | 2025 |
| J M Carroll Limited | Administrative & support | 2010 |
| J M Property (UK) Ltd | Other services | 2008 |
| J P Mcclure & SON Limited | Hospitality | 2020 |
| J. Gregory Technology Limited | Information & communication | 2020 |
| J.B.A. Globe Scaffolding Hire Limited | Construction | 1975 |
| J.M.S. Electrical Limited | Wholesale & retail | 2001 |
| JAC Machinery Ltd | Manufacturing | 2024 |
| JAY Projects and CAD Limited | Professional & scientific | 2025 |
| JDR Group Holdings Limited | Financial services | 2024 |
| JDW Air Systems Limited | Extraterritorial | 2011 |
| JHS Care Ltd | Hospitality | 2025 |
| JHS Childcare Limited | Health & social care | 2021 |
| JMD Driveways & Landscaping Limited | Administrative & support | 2025 |
| John Devlin & SON (Dukinfield) Limited | Real estate | 1964 |
| JPB Civil Engineering (NW) Limited | Construction | 2009 |
| JPB Utilities Limited | Construction | 2005 |
| JPR Consultancy (NW) Limited | Professional & scientific | 2023 |
| JYI Services Ltd | Information & communication | 2025 |
| K Cotterill Removals Limited | Transport & logistics | 2013 |
| K Cotterill Transport Limited | Transport & logistics | 2012 |
| K K Developments Group Ltd | Real estate | 2024 |
| K.H. Clad Ltd | Administrative & support | 2013 |
| K.H.A Motors Limited | Wholesale & retail | 2025 |
| K2 Bathrooms Limited | Construction | 2014 |
| KC Power Services Ltd | Manufacturing | 2019 |
| Kent Civils Ltd | Construction | 2024 |
| Khan’S Logistics & Retailer Ltd | Transport & logistics | 2026 |
| Kids Zone Denton Limited | Health & social care | 2021 |
| Kids Zone Nurseries Limited | Real estate | 1995 |
| Kids Zone Nursery Group Ltd | Education | 2022 |
| Kidzstop Day Nursery Limited | Education | 2022 |
| KS & AK Management Ltd | Information & communication | 2023 |
| L & Growthx Ltd | Professional & scientific | 2025 |
| LAC Cleaning Ltd | Administrative & support | 2022 |
| Latte DA Ltd | Hospitality | 2023 |
| Latte Lush Ltd | Hospitality | 2025 |
| LDC Business Ltd | Wholesale & retail | 2025 |
| Lee's Takeaway MCR Limited | Hospitality | 2021 |
| Lexora Solutions Limited | Administrative & support | 2026 |
| LFR Property Services Limited | Construction | 2016 |
| Liberty Consult Ltd | Extraterritorial | 2023 |
| Liberty Consulting Invest Ltd | Education | 2023 |
| Lifeline Community Services CIC | Education | 2025 |