| J a R Business Consultants Limited | Professional & scientific | 2022 |
| J and H Hospitality Ltd | Hospitality | 2022 |
| J Coley Ltd | Administrative & support | 2017 |
| J D Gibbins Limited | Professional & scientific | 2000 |
| J H Cars (Malvern) Limited | Wholesale & retail | 2016 |
| J Hopkins Consulting Ltd | Professional & scientific | 2023 |
| J Matthews Associates Limited | Information & communication | 2016 |
| J P Ovens Limited | Administrative & support | 2015 |
| J Prosser & SON Contractors Ltd | Transport & logistics | 2019 |
| J Prosser & SON Properties Limited | Real estate | 2020 |
| J Prosser and SON Limited | Transport & logistics | 2012 |
| J&P Maintenance Ltd | Hospitality | 2024 |
| J&Rd Ltd | Construction | 2019 |
| J. & C. M. Brook Limited | Construction | 1986 |
| J. G. S. Couriers Limited | Transport & logistics | 2008 |
| J.A.F.S. Limited | Construction | 2007 |
| J.K. Medical Aesthetics Ltd | Other services | 2025 |
| J.S.Kerr Building Limited | Construction | 2016 |
| Jaag Trading Limited | Professional & scientific | 2021 |
| JAC (Kinnersley) Limited | Real estate | 2026 |
| Jacob James Group Limited | Financial services | 2017 |
| Jadod IT Limited | Wholesale & retail | 2019 |
| Jadod Ltd | Real estate | 2018 |
| Jalex International Ltd | Wholesale & retail | 2020 |
| Jalr (Property) Holdings Ltd | Financial services | 2026 |
| Jamberoo Limited | Real estate | 2009 |
| James Cridland Limited | Administrative & support | 2012 |
| James Monk Design Ltd | Information & communication | 2015 |
| JAN Marriott Associates Limited | Education | 2010 |
| JAP Limited | Manufacturing | 2006 |
| Jarrah Consulting Limited | Information & communication | 2014 |
| Jason Taylor Building Contractor Ltd | Construction | 2005 |
| Jaspa Smart Properties Limited | Real estate | 2003 |
| Jasper & PIP Ltd | Wholesale & retail | 2024 |
| Jast Enterprises Ltd | Financial services | 2025 |
| JBS Accountancy Services Limited | Professional & scientific | 2022 |
| JBS Management Support Services Ltd | Professional & scientific | 2008 |
| JDX Capital Ltd | Financial services | 2021 |
| Jeannie Williamson Limited | Wholesale & retail | 2017 |
| Jeke Holdings Ltd | Real estate | 2024 |
| Jellybob Ltd | Information & communication | 2019 |
| Jenko's Welding and Fabrication Ltd | Professional & scientific | 2026 |
| Jericho House Productions | Arts & recreation | 2009 |
| Jericho Partners Limited | Other services | 2012 |
| Jess & Greg Properties Limited | Real estate | 2024 |
| Jesson Harvey Ltd | Professional & scientific | 2016 |
| Jhhutchinson Limited | Health & social care | 2022 |
| Jigsaw Communications Limited | Administrative & support | 2005 |
| Jims Premier Plumbing Services Ltd | Construction | 2018 |
| JJC Cleaning Services (Worcs) Ltd | Administrative & support | 2023 |
| Jjpb Ltd | Hospitality | 2012 |
| Jlgrvn Ltd | Professional & scientific | 2022 |
| JLW Plumbing & Heating Ltd | Energy | 2023 |
| JMH IFA Limited | Financial services | 2018 |
| John a N Best Limited | Administrative & support | 2012 |
| John Curthoys Transport Limited | Transport & logistics | 2018 |
| John Leonard Ltd | Information & communication | 2016 |
| John Malik Ltd | Health & social care | 2003 |
| John Parish Limited | Construction | 2006 |
| John Parkinson Event Management Ltd | Professional & scientific | 2019 |
| John Turner (Hereford) Limited | Agriculture & fishing | 1964 |
| Jolliffe Electrical Limited | Construction | 2025 |
| Jolliffe Plumbing & Heating Ltd | Construction | 2018 |
| Jolliffe Property Management Limited | Real estate | 2025 |
| JON Barclay Investments (London) Limited | Construction | 1975 |
| JON Wilks Consulting Limited | Professional & scientific | 2024 |
| Journey Home Styling Limited | Professional & scientific | 2025 |
| Jubilee Court Malvern Management Limited | Households | 2006 |
| Jubilee Meadow Colwall Green Management Limited | Real estate | 2014 |
| Jude Hawkins Consulting Limited | Professional & scientific | 2012 |
| Juicology Ltd | Education | 2020 |
| Julie Hales Consulting Limited | Professional & scientific | 2018 |
| Juliff Brickwork Limited | Construction | 2007 |
| Juliff Homes Limited | Construction | 2010 |
| Just Algorithms Action Group Limited | Other services | 2021 |
| Just Produce Limited | Agriculture & fishing | 2015 |
| Jwkm Property Ltd | Real estate | 2026 |
| K.R.A.S.M. Ltd | Hospitality | 2022 |
| Kariad Group Limited | Professional & scientific | 2020 |
| Kate Garner Social Ltd | Education | 2025 |
| Katerpac Limited | Wholesale & retail | 2015 |
| Kathryn Redway Associates Limited | Professional & scientific | 2010 |
| KBS Seating Ltd | Manufacturing | 2026 |
| Keelaw Consulting Limited | Professional & scientific | 2019 |
| Keep Safe Storage Oakwood Limited | Transport & logistics | 2025 |
| Kellyatc Ltd. | Professional & scientific | 2014 |
| Kempsey Properties Limited | Real estate | 2020 |
| Kendall Wadley LLP | | 2006 |
| Kendall Wadley Wealth Limited | Financial services | 2012 |
| Kengz 1 Barber Ltd | Other services | 2025 |
| Kensington Bray Ltd | Real estate | 2020 |
| Kensington House 53 Residents Limited | Administrative & support | 2005 |
| Kensington Lettings Limited | Real estate | 2000 |
| Keraulophon Limited | Other services | 2018 |
| Kersfield Developments (Dgaf) Limited | Real estate | 2016 |
| Kevin R Williams Accountant Limited | Professional & scientific | 2016 |
| Kevin Stamper Furniture Limited | Manufacturing | 2003 |
| Key IQ Limited | Information & communication | 2010 |
| Keynetics Limited | Administrative & support | 2016 |
| Keystone Property Care Ltd | Administrative & support | 2025 |