| J L Davis Design Ltd | Professional & scientific | 2020 |
| J Lane Holdings Ltd | Financial services | 2024 |
| J Ledbrook Holdings Ltd | Financial services | 2025 |
| J Legend Investment Ltd | Real estate | 2025 |
| J Letter Ltd | Wholesale & retail | 2023 |
| J Lugiewicz Limited | Transport & logistics | 2015 |
| J M a & Groups Limited | Construction | 2021 |
| J M a Group & Partners Limited | Financial services | 2021 |
| J M a Property & Developments Limited | Construction | 2021 |
| J M a Property Sales & Letting Limited | Real estate | 2021 |
| J M Flooring (Midlands) Ltd | Construction | 2024 |
| J M Hygiene Ltd | Health & social care | 2014 |
| J M J Performance & Lifestyle Ltd | Education | 2018 |
| J M Wilson Solicitors Limited | Professional & scientific | 2015 |
| J M Windows Ltd | Construction | 2005 |
| J Media Solutions Ltd | Information & communication | 2021 |
| J Mmta Caring Homes Limited | Real estate | 2025 |
| J Moseley Ltd | Hospitality | 2021 |
| J N B Construction Ltd | Construction | 2018 |
| J N Civil Services Ltd | Construction | 2016 |
| J N Gardner Limited | Professional & scientific | 2013 |
| J N Legal Limited | Professional & scientific | 2025 |
| J Nails 88 Ltd | Other services | 2025 |
| J Newhall ST. Ltd | Hospitality | 2020 |
| J Noble Ltd | Professional & scientific | 2025 |
| J O a Leisure Limited | Arts & recreation | 2016 |
| J P L Electrical Limited | Construction | 2000 |
| J P Property Services Limited | Construction | 2015 |
| J P Techs Limited | Information & communication | 2009 |
| J Patrick Ltd | Professional & scientific | 2022 |
| J R & M Investments Limited | Professional & scientific | 2017 |
| J R Edgar Joinery & Building Ltd | Construction | 2015 |
| J R Estates Birmingham Ltd | Real estate | 2016 |
| J R Foster and SON Ltd | Wholesale & retail | 2008 |
| J R Hold Ltd | Hospitality | 2020 |
| J R L Builders Ltd | Construction | 2011 |
| J R Plumbers Ltd | Construction | 2025 |
| J R Roasting Ltd | Hospitality | 2024 |
| J R Training Ltd | Other services | 2024 |
| J Rosch Limited | Wholesale & retail | 2011 |
| J RX Solutions Ltd | Professional & scientific | 2025 |
| J S Balduckie Ltd | Construction | 2006 |
| J S Batth Ltd | Wholesale & retail | 2026 |
| J S Bhalru Locum Ltd | Real estate | 2023 |
| J S Building and Maintenance Services Ltd | Construction | 2015 |
| J S Convenience (Holdings) Limited | Real estate | 2013 |
| J S Convenience Stores 2 Limited | Wholesale & retail | 2026 |
| J S Convenience Stores Limited | Wholesale & retail | 2010 |
| J S Healthcare Solutions Ltd | Health & social care | 2017 |
| J S Import Export Limited | Wholesale & retail | 2018 |
| J S Jewellers Ltd | Wholesale & retail | 2024 |
| J S M R Buildings Ltd | Construction | 2025 |
| J S Mehat Heating and Plumbing Ltd | Construction | 2026 |
| J S Norris Ltd | Transport & logistics | 2021 |
| J S Prestige Auto Services Limited | Wholesale & retail | 2010 |
| J S Recycling Ltd | Water & waste | 2026 |
| J S Sahota Ltd | Real estate | 2026 |
| J S Scraps Limited | Water & waste | 2025 |
| J S Sira Financial Advice Ltd | Financial services | 2019 |
| J S Suppliers Ltd | Wholesale & retail | 2022 |
| J Scott Foods Limited | Manufacturing | 2024 |
| J Shaw Contractors Ltd | Wholesale & retail | 2017 |
| J Shilton Transport Services Limited | Transport & logistics | 2019 |
| J Squared Media Limited | Information & communication | 2023 |
| J Swingler Properties Ltd | Real estate | 2022 |
| J T Housing Ltd | Hospitality | 2020 |
| J T Supplies Limited | Wholesale & retail | 2012 |
| J T Support Services Ltd | Administrative & support | 2023 |
| J Thomas Edwards & Sons Limited | Professional & scientific | 1920 |
| J Transport (B'Ham) Limited | Transport & logistics | 2016 |
| J Turton Trading Ltd | Wholesale & retail | 2024 |
| J V G Properties Limited | Real estate | 2014 |
| J W Accountancy Services Ltd | Professional & scientific | 2021 |
| J W Flooring (Midlands) Limited | Construction | 2024 |
| J W Hinks LLP | | 2012 |
| J W Manufacturing Ltd | Manufacturing | 2019 |
| J W Miller Associates Limited | Real estate | 2001 |
| J Wealth Limited | Financial services | 2017 |
| J Webb Holdings Limited | Wholesale & retail | 2021 |
| J Williams Exteriors Ltd | Administrative & support | 2024 |
| J Williams Roofing Ltd | Construction | 2020 |
| J Z Properties Ltd | Real estate | 2018 |
| J Z Property Investment Ltd | Real estate | 2016 |
| J&3H Investments Limited | Real estate | 2025 |
| J&A Insulations Limited | Construction | 2021 |
| J&A Party and Events Ltd | Administrative & support | 2024 |
| J&C Puppies Limited | Other services | 2017 |
| J&D Mcgrath Limited | Administrative & support | 2025 |
| J&D Recruitment Ltd | Administrative & support | 2025 |
| J&D Strategies Ltd | Financial services | 2025 |
| J&E Investment Holdings Limited | Real estate | 2022 |
| J&F Enterprises Ltd | Administrative & support | 2017 |
| J&F Motorcycles Ltd | Wholesale & retail | 2025 |
| J&G Improvement Service Limited | Construction | 2013 |
| J&G Properties Midlands Ltd | Real estate | 2025 |
| J&G Roofing and Building Ltd | Construction | 2025 |
| J&H Courier Limited | Transport & logistics | 2024 |
| J&H Singh Builders Ltd | Construction | 2024 |
| J&Huk Ltd | Transport & logistics | 2026 |
| J&J 27DS Ltd | Hospitality | 2024 |