| Howe Plant Limited | Administrative & support | 2002 |
| HPE (M/C) Limited | Professional & scientific | 2003 |
| HS World Finance Limited | Wholesale & retail | 2014 |
| Hub (IMS) Limited | Information & communication | 2011 |
| Hudson Solutions Ltd | Professional & scientific | 2024 |
| Humanmade Studio Ltd. | Wholesale & retail | 2025 |
| Humdehum Limited | Extraterritorial | 2020 |
| Hvlr Ltd | Professional & scientific | 2023 |
| Hyde Park Corner Ltd | Extraterritorial | 2019 |
| Hypeakenergy Ltd | Professional & scientific | 2022 |
| HZ Property Management Ltd | Real estate | 2022 |
| I & E Developments Limited | Construction | 2018 |
| Iconic Ways Limited | Construction | 2023 |
| Identidem Ltd | Manufacturing | 2022 |
| Idmb Advisory Ltd | Information & communication | 2011 |
| Ilir's Chippy Ltd | Hospitality | 2023 |
| Image and Engineering Ltd | Manufacturing | 2024 |
| Image Building & Bathroom Solutions Limited | Construction | 2013 |
| IMM3RSE Limited | Information & communication | 2024 |
| Impales Ltd | Professional & scientific | 2024 |
| IN 2 Fitness Limited | Education | 2004 |
| Inclusive Mind Diagnostics Ltd | Education | 2026 |
| Indigo Blue Accountancy Services Limited | Professional & scientific | 2019 |
| Indirex Solutions Ltd | Professional & scientific | 2007 |
| Industrial Labelling Systems Ltd | Administrative & support | 2002 |
| Infused RAW Health Limited | Wholesale & retail | 2016 |
| Ingenio Eco Ltd | Wholesale & retail | 2019 |
| Ingham Graham Wealth Management Ltd | Financial services | 2016 |
| Inology IT Ltd | Information & communication | 2018 |
| Inovationcomms Limited | Information & communication | 2014 |
| Inside OUT Forest School Ltd | Education | 2018 |
| Inspiring Holidays Limited | Administrative & support | 2006 |
| Instarent Ltd | Real estate | 2017 |
| Integration Technology (North West) Limited | Information & communication | 2010 |
| Intelligent Group Ltd | Information & communication | 2015 |
| Interlith (Derby) Limited | Manufacturing | 1967 |
| Interworking Ltd | Education | 2026 |
| Invest SS Limited | Real estate | 2018 |
| Invigorate Digital Ltd | Information & communication | 2022 |
| Irving Inns Limited | Hospitality | 2023 |
| Isobel Ltd | Hospitality | 2017 |
| Italian Doors Limited | Administrative & support | 2009 |
| Italian Pizza Place Ltd | Hospitality | 2023 |
| Iteration Games Ltd | Information & communication | 2019 |
| Ittechuk Ltd | Wholesale & retail | 2025 |
| IVY Elizabeth Wellness & Rejuvenation Limited | Health & social care | 2022 |
| IVY Marketing Technology Limited | Information & communication | 2019 |
| J D H Assessors Limited | Professional & scientific | 2010 |
| J Hargreaves Ltd | Agriculture & fishing | 2023 |
| J M Management Facilities Limited | Professional & scientific | 2017 |
| J P D Services Limited | Other services | 2006 |
| J P Joinery & Construction Limited | Construction | 2010 |
| J Rawlings Property Management Ltd | Administrative & support | 2025 |
| J S C Construction (NW) Limited | Construction | 2021 |
| J&J Trading (New Mills) Ltd | Wholesale & retail | 2022 |
| J. Davenport Holdings Ltd | Wholesale & retail | 2025 |
| J.P.Mantel Ltd | Administrative & support | 2026 |
| J.T.T. Investments Limited | Real estate | 2000 |
| J.W. Mettrick and SON Limited | Manufacturing | 1986 |
| J3B Properties Ltd | Real estate | 2022 |
| Jack Badger Enterprises Ltd | Financial services | 2025 |
| Jack Badger Limited | Wholesale & retail | 2010 |
| Jackson Design & Construct Limited | Professional & scientific | 2015 |
| Jade Glossop Ltd | Hospitality | 2021 |
| Jamel Johnston Limited | Professional & scientific | 2018 |
| James SUI Ltd | Information & communication | 2010 |
| Jane O'Hara Marketing & Communications Ltd | Professional & scientific | 2025 |
| Janus Limited | Information & communication | 1989 |
| Java Lettings Ltd | Real estate | 2020 |
| Java Property Group Ltd | Construction | 2021 |
| JCT Consultants (UK) Limited | Professional & scientific | 2015 |
| JCX Financials Limited | Professional & scientific | 2023 |
| JD Meadow Properties Ltd | Real estate | 2024 |
| Jdas Electrical Limited | Construction | 2024 |
| JDC Access & Joinery Limited | Other services | 2011 |
| JDH Landscapes Ltd | Administrative & support | 2023 |
| Jean Juviniere Limited | Wholesale & retail | 1989 |
| Jeremy Unsworth Funeral Services (Glossop) Limited | Other services | 2020 |
| JG Leisure Inspection Ltd | Professional & scientific | 2010 |
| JIM Ellam Photography Limited | Professional & scientific | 2005 |
| Jit-Pak Packaging Limited | Wholesale & retail | 2022 |
| JJ Joinery (NW) Limited | Construction | 2024 |
| JJ Training Glossop Ltd | Professional & scientific | 2021 |
| JJO Sales Ltd | Wholesale & retail | 2024 |
| Jjtraining(Uk) Limited | Education | 2011 |
| JMC Service & MOT Centre Limited | Wholesale & retail | 2025 |
| JMP Asbestos Ltd | Other services | 2023 |
| Jmsm Property Ltd | Real estate | 2023 |
| JOB Heron Ltd | Extraterritorial | 2016 |
| JOE Barber (Plumbers) Limited | Wholesale & retail | 1977 |
| John Arnfield Ltd | Professional & scientific | 2011 |
| John Clarke Distribution Limited | Transport & logistics | 2001 |
| John Hanson Trucks Limited | Transport & logistics | 2025 |
| John Marsland Ltd | Other services | 2020 |
| Johnston Electrical Ltd | Construction | 2006 |
| Josie Wood Beauty Ltd | Other services | 2026 |
| JP Bowyer Properties Ltd | Real estate | 2020 |
| JP Flooring Services Limited | Construction | 2026 |
| JP Waterson & SON Ltd | Manufacturing | 2008 |
| JS Security Services Ltd | Administrative & support | 2023 |