| JLR Gill Properties Limited | Real estate | 2023 |
| Jmam Enterprises Ltd | Information & communication | 2020 |
| Jmam Services Ltd | Professional & scientific | 2023 |
| JMB Carriers Limited | Transport & logistics | 2025 |
| JMB Property Developers Ltd | Real estate | 2026 |
| JMB Transport Ltd | Transport & logistics | 2025 |
| Jmea Limited | Real estate | 2020 |
| Jmike Limited | Health & social care | 2016 |
| JMN Freight Ltd | Transport & logistics | 2026 |
| JMO Design& Fabrication Ltd | Manufacturing | 2023 |
| JMS Constructions Midlands Limited | Construction | 2023 |
| Jms's Property Service Ltd | Construction | 2026 |
| Jodh Limited | Real estate | 2025 |
| JOE Lawlor Cladding Services Limited | Construction | 2019 |
| Joel's Food Ltd | Wholesale & retail | 2024 |
| Joes Sandwell Ltd | Hospitality | 2026 |
| Joginders Limited | Manufacturing | 2025 |
| Johal C M Ltd | Hospitality | 2024 |
| Johal Delivers Ltd | Hospitality | 2025 |
| Johal Electrical Works Limited | Construction | 2018 |
| Johal Holdings Midlands Ltd | Real estate | 2023 |
| Johal Signature Ltd | Hospitality | 2025 |
| Johal UK Construction Ltd | Construction | 2026 |
| John Hicken (Central) Ltd | Construction | 2026 |
| John Hicken (Midlands) Ltd. | Construction | 1994 |
| John Marks Glass Limited | Manufacturing | 1993 |
| Jolliman Essentials Ltd | Wholesale & retail | 2016 |
| Josan Builder JT Ltd | Manufacturing | 2025 |
| Joseph and Jesse Siddons Limited | Manufacturing | 1881 |
| Joy Arch Limited | Construction | 2025 |
| Joy Camanzo Travels Ltd | Administrative & support | 2023 |
| JP Bibik Ltd | Transport & logistics | 2022 |
| JP Fisheries Ltd | Hospitality | 2025 |
| JP Transport Bham Ltd | Transport & logistics | 2015 |
| JPC Travel Solutions Ltd | Transport & logistics | 2019 |
| JPS Property Ltd | Construction | 2020 |
| JR Building Services Ltd | Construction | 2006 |
| JRS Coaches Limited | Transport & logistics | 2018 |
| JRS Enterprise Solutions Ltd | Information & communication | 2016 |
| JRS Horizon Ventures Ltd | Real estate | 2025 |
| JS Gold Limited | Transport & logistics | 2016 |
| JS Video Limited | Information & communication | 2007 |
| JSB Builders Ltd | Construction | 2025 |
| JSB Driving Limited | Transport & logistics | 2025 |
| Jsjt Builders Limited | Extraterritorial | 2025 |
| JST Convenience Store Ltd | Wholesale & retail | 2026 |
| JST West Midlands Ltd | Wholesale & retail | 2019 |
| JSV Midlands Ltd | Administrative & support | 2024 |
| JT Constructions Midlands Ltd | Construction | 2024 |
| JTK Imperial Ltd | Real estate | 2025 |
| JTR Real Estate Ltd | Real estate | 2023 |
| Judge Plumbing & Tiles Limited | Construction | 2026 |
| Juice Joint Ltd | Wholesale & retail | 2026 |
| Jujhar Construction Ltd | Construction | 2023 |
| Julien Services Ltd | Construction | 2026 |
| Jump N Bounce Limited | Arts & recreation | 2018 |
| Junaid Tahoor Ltd | Health & social care | 2025 |
| Junction 1 Auto Solutions Ltd | Wholesale & retail | 2016 |
| Junction 1 Express Ltd | Wholesale & retail | 2023 |
| Junction One B'Ham Ltd | Real estate | 2021 |
| Jusask Limited | Wholesale & retail | 2025 |
| JUSTWITHIN30MINUTES Ltd | Transport & logistics | 2026 |
| JVK Logistics Ltd | Transport & logistics | 2017 |
| JW Majka Ltd | Transport & logistics | 2017 |
| JY Traders Ltd | Construction | 2025 |
| K 03 K Limited | Transport & logistics | 2024 |
| K Emergency Electrician Ltd | Construction | 2026 |
| K H C International Trading Limited | Transport & logistics | 1997 |
| K Lehmann Limited | Construction | 2024 |
| K Mann Limited | Health & social care | 2021 |
| K R Transport Limited | Transport & logistics | 2011 |
| K S Chatha Builders Ltd | Construction | 2021 |
| K2A Organisation Ltd | Wholesale & retail | 2023 |
| KAD Capital Holdings Ltd | Real estate | 2022 |
| Kadanza Holdings Ltd | Real estate | 2017 |
| Kahraman Enterprises Limited | Professional & scientific | 2019 |
| Kailash Deliveries Ltd | Transport & logistics | 2024 |
| Kairos Ministries Centre | Other services | 2012 |
| Kaiser Intelligence Ltd | Information & communication | 2026 |
| Kaizen Aesthetics Limited | Wholesale & retail | 2025 |
| Kaleidoscope Plus Group | Health & social care | 2003 |
| Kallu Brothers Transport Ltd | Transport & logistics | 2015 |
| Kamal Trades UK Ltd | Financial services | 2019 |
| Kamaran Taxi Ltd | Transport & logistics | 2026 |
| Kandel Couriers Limited | Transport & logistics | 2024 |
| Kang Motor Limited | Wholesale & retail | 2018 |
| Kapera Limited | Professional & scientific | 2020 |
| Kapoor Chohan Apartments Ltd | Real estate | 2020 |
| KAR Midlands Limited | Transport & logistics | 2016 |
| Karam Constructions Ltd | Real estate | 2018 |
| Karan Barbers Ltd | Other services | 2025 |
| Karan Global Logistics Limited | Transport & logistics | 2026 |
| Karanco Limited | Construction | 2025 |
| Karcom Ltd | Wholesale & retail | 2014 |
| Karcom Used Ltd | Wholesale & retail | 2023 |
| Kartaar Ltd | Transport & logistics | 2026 |
| Kasey Property Investments Ltd | Financial services | 2025 |
| Kashmark Limited | Wholesale & retail | 2025 |
| Kashmirs Fish & Chips Ltd | Wholesale & retail | 2024 |
| Kaspee Investment Limited | Wholesale & retail | 2021 |