| JOE Zaza Ltd | Health & social care | 2025 |
| Joe's Members Bar Limited | Hospitality | 2017 |
| Joebrennacare Limited | Public administration | 2021 |
| Joel Boon Access Ltd | Other services | 2016 |
| Joel Mindfulness Ltd | Health & social care | 2023 |
| Joeley's Cafe Bar Ltd | Hospitality | 2026 |
| Joelle's Oasis Limited | Wholesale & retail | 2024 |
| Joelsa Healthcare Ltd | Health & social care | 2023 |
| Joemcbox Ltd | Arts & recreation | 2026 |
| Joemchaleplant Ltd | Construction | 2026 |
| Joemcs Ltd | Transport & logistics | 2025 |
| Joey Barton Promotions Limited | Arts & recreation | 2007 |
| Joeys Maintenance Limited | Construction | 2025 |
| JOG 2 Limited | Hospitality | 2011 |
| Johal (Liverpool) Ltd | Wholesale & retail | 2022 |
| Johel Properties Ltd | Real estate | 2025 |
| John & Anthony Mcvey Ltd | Real estate | 2025 |
| John & Sons Properties Ltd | Real estate | 2021 |
| John a Ball Properties Limited | Real estate | 2024 |
| John Addley Limited | Other services | 1982 |
| John and Co Building Ltd | Construction | 2025 |
| John and Eileen Nisbet Trading Limited | Professional & scientific | 2023 |
| John Anthony and Co Scaffolding Limited | Construction | 2023 |
| John Anthony Building & Maintenance Ltd | Construction | 2025 |
| John Anthony Properties Ltd | Real estate | 2020 |
| John Anthony Roofing Limited | Construction | 2018 |
| John Bennett (Wirral) Ltd | Wholesale & retail | 2003 |
| John Brand Marketing Ltd | Other services | 2000 |
| John Brennen Taxis Ltd | Transport & logistics | 2020 |
| John Brown & Co. Ltd | Real estate | 2015 |
| John Clarke North West Limited | Other services | 2015 |
| John Cliffe Joinery Ltd | Construction | 2016 |
| John Cole Property Limited | Real estate | 2024 |
| John Collier Ltd | Energy | 2003 |
| John Derek Maher Ltd | Extraterritorial | 2024 |
| John E Tallis Limited | Professional & scientific | 2025 |
| John Fachiri Ltd | Financial services | 2006 |
| John G Ltd | Hospitality | 2014 |
| John Gargan (Chartering) Limited | Professional & scientific | 1982 |
| John Gillies Limited | Other services | 2019 |
| John Graham Plumbing Limited | Extraterritorial | 1989 |
| John Harvey Construction Limited | Construction | 2022 |
| John Hennessey Ltd | Construction | 2014 |
| John Heymans & Co Limited | Construction | 2003 |
| John Holt & Company (Liverpool) Limited | Wholesale & retail | 1897 |
| John Holt Group Limited | Professional & scientific | 2000 |
| John Holt Management Limited | Professional & scientific | 2005 |
| John James Kelly Limited | Financial services | 2015 |
| John Joyce Engineering Ltd | Manufacturing | 2024 |
| John Kelly Properties Limited | Real estate | 2015 |
| John LEE 9 Ltd | Wholesale & retail | 2026 |
| John Lucy International Limited | Transport & logistics | 2024 |
| John Mason International Limited | Transport & logistics | 1986 |
| John Mcbride Ltd | Hospitality | 2011 |
| John Mccall Architects Limited | Professional & scientific | 2000 |
| John Morris Developments Ltd | Construction | 2003 |
| John Mountfield Ltd | Professional & scientific | 2026 |
| John Munroe Group Limited | Financial services | 2012 |
| John O' Groats Limited | Professional & scientific | 1991 |
| John Parkinson Leadership Consulting Ltd | Other services | 2016 |
| John Parrott Leisure Limited | Wholesale & retail | 2008 |
| John Parrott Limited | Administrative & support | 1984 |
| John Parry Trading Limited | Professional & scientific | 2018 |
| John Paul Developments Limited | Real estate | 1999 |
| John Paul Hairdressing Limited | Other services | 2012 |
| John Paul Seddon Limited | Financial services | 2015 |
| John Pierrepont Ltd | Wholesale & retail | 2024 |
| John Powell Press Photographer Ltd | Professional & scientific | 2012 |
| John R Ashcroft Limited | Health & social care | 2017 |
| John Rigby Catering Limited | Hospitality | 2019 |
| John S Matthews Limited | Other services | 2012 |
| John Slater (Electrical and Mechanical Engineers) Limited | | 1966 |
| John Street Social Limited | Hospitality | 2023 |
| John Truswell & Sons (Garage) Limited | Transport & logistics | 1940 |
| John West Foods Limited | Wholesale & retail | 1924 |
| John Williams Group Holdings Limited | Professional & scientific | 2000 |
| Johnfal Ventures Limited | Administrative & support | 2022 |
| Johnny Goggles Ltd | Health & social care | 2019 |
| Johnny Latham Support Limited | Other services | 2016 |
| Johnny Orthopaedics Ltd | Health & social care | 2024 |
| Johnson Craig Ltd | Professional & scientific | 2003 |
| Johnson Estates 24 Ltd | Real estate | 2024 |
| Johnson Morgan Assets Ltd | Real estate | 2025 |
| Johnson Surveying Ltd | Professional & scientific | 2025 |
| Johnson Utility Solutions Limited | Energy | 2016 |
| Johnston & Mahoney Developments Ltd | Real estate | 2023 |
| Johnston Civil Construction Limited | Construction | 2009 |
| Johnstone Acquisitions Ltd | Real estate | 2021 |
| JOI Developments Ltd | Construction | 2025 |
| JOI Properties (NW) Ltd | Real estate | 2025 |
| Join the Dots Consulting Limited | Professional & scientific | 2025 |
| Join the Family Limited | Information & communication | 2018 |
| Joind Search Ltd | Information & communication | 2026 |
| Joint Advanced Sciences Ltd | Wholesale & retail | 2026 |
| Joint Movement Simulation Ltd | Professional & scientific | 2023 |
| Jojags UK Ltd | Wholesale & retail | 2017 |
| Jojo Fashion Boutique Limited | Wholesale & retail | 2011 |
| Jokelib Property Investments Limited | Real estate | 2023 |
| Joker Property Ltd | Real estate | 2025 |
| Jola & Beauty Limited | Other services | 2018 |