| Jojo’S Stylist Ltd | Other services | 2025 |
| Jolino Eatries Limited | Wholesale & retail | 2025 |
| Jollof and Chill Ltd | Hospitality | 2025 |
| Jolly Catering Limited | Hospitality | 2008 |
| Jomeje Ltd | Health & social care | 2025 |
| JON Smith Entertainment Services Limited | Administrative & support | 2017 |
| Jonathan Bolton Windows & Doors Ltd | Construction | 2026 |
| Jones & Griffiths Holdings Limited | Financial services | 2022 |
| Jones Skip Hire (Wolverhampton) Holdings Limited | Financial services | 2024 |
| Jones Skip Hire (Wolverhampton) Limited | Water & waste | 2005 |
| Jones's Trading Limited | Financial services | 2026 |
| Joneselitefitness Ltd | Arts & recreation | 2020 |
| Jonesfoundation | Education | 2024 |
| Jonsingshots Ltd | Professional & scientific | 2025 |
| JOO Tech Drive Ltd | Wholesale & retail | 2022 |
| Jooced Custom Sound & Vision Limited | Construction | 2011 |
| Jooced Group Limited | Construction | 2020 |
| Joomfashion Ltd | Wholesale & retail | 2023 |
| Jora Solutions Ltd | Information & communication | 2026 |
| Jora Transport Ltd | Transport & logistics | 2021 |
| Jorawar Ltd | Real estate | 2024 |
| Jorawar Trading Ltd | Wholesale & retail | 2024 |
| Jorco Ltd | Information & communication | 2013 |
| Jordan Family Company Limited | Real estate | 2021 |
| Jordhan Industries Limited | Manufacturing | 2007 |
| Jorek Limited | Transport & logistics | 2024 |
| Josamuelslogistics Limited | Transport & logistics | 2025 |
| Joseph Hamilton Ltd | Transport & logistics | 2025 |
| Joseph Tipper (Hardware) Limited | Manufacturing | 1992 |
| JOSH78 Ltd | Transport & logistics | 2022 |
| Joshi Properties Investments Limited | Construction | 2024 |
| Joshua Barard Ltd | Construction | 2017 |
| Joshuas LAB Limited | Manufacturing | 2025 |
| Josvic Property Limited | Real estate | 2026 |
| JOT Logistics Limited | Transport & logistics | 2025 |
| Joule Group Import Export (UK) Ltd | Administrative & support | 2022 |
| Journey IT Services Ltd | Information & communication | 2020 |
| Journeyscape Limited | Administrative & support | 2025 |
| JOVAYD1 Limited Company Ltd | Administrative & support | 2016 |
| Jowills Trades Limited | Wholesale & retail | 2019 |
| Joxx Properties Limited | Real estate | 2021 |
| Joy Bar & Grill Ltd | Hospitality | 2024 |
| Joyous in Christ Ministries | Other services | 2020 |
| Jozef Delivery Ltd | Manufacturing | 2025 |
| Jozone Kids Club Limited | Other services | 2010 |
| Jozydoh Care Limited | Health & social care | 2024 |
| Jozzy Kids Trendz Ltd | Wholesale & retail | 2019 |
| JP & JC Burns Limited | Construction | 2016 |
| JP Agile Technologies Limited | Information & communication | 2023 |
| JP Griffiths & SON Limited | Wholesale & retail | 2020 |
| JP Marketing Buzz Ltd | Information & communication | 2024 |
| JP Model Solutions Ltd | Financial services | 2013 |
| JP New Co Limited | Professional & scientific | 2021 |
| JP Pro Products Ltd | Wholesale & retail | 2024 |
| JP Transport Solutions Ltd | Transport & logistics | 2023 |
| JPA Products Design Limited | Wholesale & retail | 2025 |
| JPD Trikes Ltd | Manufacturing | 2020 |
| JPF Facilitations Ltd | Administrative & support | 2023 |
| JPG Machine Hire Limited | Administrative & support | 2020 |
| JPG Roofing Ltd | Construction | 2024 |
| JPJ Construction Ltd | Construction | 2021 |
| Jpkherabuilders Limited | Construction | 2025 |
| JPL Autos Ltd | Wholesale & retail | 2015 |
| JPN Logistics Couriers Ltd | Transport & logistics | 2022 |
| JPP Capital Investments Limited | Financial services | 2021 |
| JPR Foods Limited | Hospitality | 2020 |
| JPS Property Group Ltd | Hospitality | 2023 |
| Jptc Property Holdings Limited | Real estate | 2023 |
| Jpws Holdings Limited | Administrative & support | 2019 |
| JR Construction (Birmingham) Limited | Construction | 2019 |
| JR Crisp Property Limited | Households | 2025 |
| JR Interiors Riches Street Ltd | Construction | 2018 |
| JR Latham Group Limited | Manufacturing | 2017 |
| JR Project Support Solutions Ltd | Professional & scientific | 2017 |
| JR Psychology Ltd | Professional & scientific | 2022 |
| Jrbn Services Limited | Professional & scientific | 2025 |
| JRD Training Solutions Ltd | Education | 2014 |
| Jrdz Community CIC | Information & communication | 2026 |
| JRH Property Holdings Ltd | Real estate | 2021 |
| JRK Computer Supplies Limited | Wholesale & retail | 2003 |
| JRS Investment Holdings Limited | Real estate | 2020 |
| JRT Interiors Ltd | Construction | 2025 |
| JS Bharat Properties Ltd | Real estate | 2026 |
| JS Bhullar Limited | Other services | 2021 |
| JS Building Ltd | Construction | 2025 |
| JS Complete Installations Limited | Construction | 2014 |
| JS Consultants UK Limited | Professional & scientific | 2000 |
| JS Employment Ltd | Administrative & support | 2022 |
| JS Living Limited | Real estate | 2026 |
| JS Mahal Ltd | Transport & logistics | 2024 |
| JS Online Builders Merchant Ltd | Wholesale & retail | 2019 |
| JS57 Transport Ltd | Transport & logistics | 2025 |
| JSA Investment Properties Ltd | Real estate | 2026 |
| JSB Cardiac Surgery Ltd | Health & social care | 2019 |
| JSB Private Ltd | Transport & logistics | 2025 |
| JSB Properties UK Holdings Limited | Financial services | 2022 |
| JSB Pubs Ltd | Hospitality | 2023 |
| Jsbk Investments Ltd | Real estate | 2022 |
| Jscsolars Ltd | Energy | 2024 |
| JSD Civils Ltd | Construction | 2021 |