| Jobs UK Washington Ltd | Professional & scientific | 2023 |
| Jobs UK Watford Ltd | Information & communication | 2023 |
| Jobs UK Web Portals Ltd | Manufacturing | 2020 |
| Jobs UK Wellness Beauty Fitness and Sport Ltd | Wholesale & retail | 2023 |
| Jobs UK Wells Ltd | Manufacturing | 2023 |
| Jobs UK West Bromwich Ltd | Administrative & support | 2023 |
| Jobs UK West Central London Ltd | Financial services | 2023 |
| Jobs UK West London Ltd | Financial services | 2023 |
| Jobs UK Westminster Ltd | Manufacturing | 2023 |
| Jobs UK Weston Super Mare Ltd | Wholesale & retail | 2023 |
| Jobs UK Wetherby Ltd | Administrative & support | 2023 |
| Jobs UK Where Ambition Meets Success Ltd | Information & communication | 2025 |
| Jobs UK Whitley Bay Ltd | Administrative & support | 2023 |
| Jobs UK Wigan Ltd | Financial services | 2023 |
| Jobs UK Winchester Ltd | Manufacturing | 2023 |
| Jobs UK Woking Ltd | Wholesale & retail | 2023 |
| Jobs UK Wolverhampton Ltd | Manufacturing | 2023 |
| Jobs UK Worcester Ltd | Manufacturing | 2023 |
| Jobs UK Worcestershire Ltd | Mining & quarrying | 2023 |
| Jobs UK Working Together for Success Ltd | Information & communication | 2025 |
| Jobs UK Working Together Ltd | Wholesale & retail | 2022 |
| Jobs UK Workington Ltd | Administrative & support | 2023 |
| Jobs UK Worksop Ltd | Administrative & support | 2023 |
| Jobs UK Worthing Ltd | Wholesale & retail | 2023 |
| Jobs UK Wrexham Ltd | Agriculture & fishing | 2023 |
| Jobs UK Yeovil Ltd | Wholesale & retail | 2023 |
| Jobs UK York Ltd | Manufacturing | 2023 |
| Jobs UK Your Potential OUR Passion Ltd | Information & communication | 2025 |
| JOBS4 Clicks Worldwide Ltd | Information & communication | 2019 |
| Jobsmiddleeast Limited | Information & communication | 2009 |
| Jobsnips Ltd | Professional & scientific | 2025 |
| Joda Property Limited | Real estate | 2004 |
| Jodamian Ltd | Health & social care | 2017 |
| Jodesrich Limited | Real estate | 2026 |
| Jodhe Limited | Transport & logistics | 2020 |
| JOE & COE Ltd | Administrative & support | 2017 |
| JOE Autos Limited | Manufacturing | 2017 |
| JOE Car Repair Limited | Wholesale & retail | 2015 |
| JOE Fraser Gymnastics Limited | Arts & recreation | 2023 |
| JOE Fraser Limited | Arts & recreation | 2021 |
| JOE JOE Jims Limited | Health & social care | 2004 |
| JOE Master Tech Limited | Manufacturing | 2024 |
| JOE Services Ltd | Transport & logistics | 2015 |
| Joe's Bikespace Limited | Transport & logistics | 2020 |
| Joe's Collectables Ltd | Wholesale & retail | 2026 |
| Joe's EDS Reworks Company Ltd | Manufacturing | 2025 |
| Joe's Haulage Limited | Transport & logistics | 2019 |
| Joe's Masala HUT Ltd | Hospitality | 2016 |
| Joelipat Ltd | Transport & logistics | 2025 |
| Joellen Brand Designs Ltd | Professional & scientific | 2020 |
| Joepro Ltd | Construction | 2025 |
| Joey Koala Ltd | Manufacturing | 2017 |
| Joeys BBQ Limited | Hospitality | 2025 |
| Jogi G (UK) Construction Ltd | Construction | 2019 |
| JOH Legal Limited | Professional & scientific | 2025 |
| Johal Bholina Ltd | Real estate | 2026 |
| Johal Catering Limited | Hospitality | 2012 |
| Johal Consultancy Services Limited | Professional & scientific | 2023 |
| Johal Midlands Properties Ltd | Households | 2023 |
| Johal Properties Limited | Real estate | 2000 |
| Johal Realty Limited | Real estate | 2025 |
| Johal Supermarket (UK) Ltd | Wholesale & retail | 2008 |
| Johal Transport Services Ltd | Transport & logistics | 2018 |
| Johal's Kitchen Ltd | Hospitality | 2025 |
| Joharide Ltd | Information & communication | 2023 |
| Johata Ltd | Health & social care | 2014 |
| John & Michael Williams (Brynmawr) Limited | Wholesale & retail | 1964 |
| John Astley & Sons Limited | Wholesale & retail | 1892 |
| John Barlass Rail Services Ltd | Transport & logistics | 2010 |
| John Beavan Limited | Manufacturing | 2011 |
| John Birch Guitars Limited | Extraterritorial | 2021 |
| John Birch Guitars UK Limited | Manufacturing | 2021 |
| John Body Clinic Limited | Wholesale & retail | 2020 |
| John Burgess Studio Limited | Professional & scientific | 2021 |
| John Butlin Limited | Transport & logistics | 1948 |
| John Capital Ltd | Financial services | 2020 |
| John Charles Interiors Limited | Wholesale & retail | 2012 |
| John Clive Industries Ltd | Health & social care | 2020 |
| John Coffey Building & Maintenance Ltd | Construction | 2018 |
| John Coldham (Norwich) Limited | Wholesale & retail | 2017 |
| John Cook Associates Limited | Professional & scientific | 2003 |
| John Davenport & Sons Brewery Limited | Professional & scientific | 2007 |
| John Doyle Construction Limited | Wholesale & retail | 1966 |
| John Eastaff (Builders Merchants) Limited | Professional & scientific | 1975 |
| John Eastaff (Holdings) Limited | Professional & scientific | 1992 |
| John Ellis & Co. Ltd. | Professional & scientific | 2012 |
| John Ellis Holdings Ltd | Financial services | 2012 |
| John Evans & Co Events Limited | Hospitality | 2025 |
| John Evans & Co Food Services Limited | Hospitality | 2026 |
| John Evans & Co Investments Limited | Financial services | 2025 |
| John Evans Interior Architecture + Design Limited | Professional & scientific | 2000 |
| John Express&Co Ltd | Transport & logistics | 2019 |
| John Food Store Limited | Wholesale & retail | 2008 |
| John Gillespie Contractors Limited | Construction | 2003 |
| John Hemming Trading Limited | Health & social care | 2011 |
| John Hill I F Limited | Other services | 2009 |
| John J Patton Limited | Construction | 2005 |
| John JOE and Partners Limited | Professional & scientific | 2023 |
| John Keatley Investments Limited | Professional & scientific | 1984 |
| John Kilby & SON Limited | Manufacturing | 1955 |