| Jowocare Ltd | Administrative & support | 2023 |
| Joynson Building & Traditional Roofing Ltd | Construction | 2023 |
| JP BIM Limited | Other services | 2019 |
| JP Commercial Solutions Limited | Professional & scientific | 2026 |
| JP Development Group Ltd | Construction | 2023 |
| JP FOX Ltd | Administrative & support | 2023 |
| JP Homes and Properties Ltd | Real estate | 2024 |
| JP Properties NW Ltd | Real estate | 2023 |
| JP Validation Services Limited | Administrative & support | 2015 |
| JP Vision Ltd | Professional & scientific | 2018 |
| JPA & Sons Holding Limited | Administrative & support | 2016 |
| JPA Global Ltd | Administrative & support | 2023 |
| JPC Consulting Ltd | Administrative & support | 2009 |
| JPC Safety Compliance Ltd | Professional & scientific | 2025 |
| Jpcc Limited | Administrative & support | 2011 |
| JPD Electrical Installations & Offshore Solutions Ltd | Manufacturing | 2012 |
| JPD Network Consultancy Ltd | Administrative & support | 2007 |
| Jpearson Tech Recruiting Limited | Administrative & support | 2024 |
| JPF Consultancy Services Ltd | Administrative & support | 2026 |
| Jphetherington Ltd | Professional & scientific | 2021 |
| JPM (NW) Ltd | Construction | 2024 |
| JPM Engineering Services Ltd | Professional & scientific | 2017 |
| Jpmfs Solutions Limited | Information & communication | 2021 |
| Jpmm Ltd | Manufacturing | 2025 |
| Jpmp Limited | Administrative & support | 2020 |
| JPS BIM Solutions Ltd | Construction | 2023 |
| JPS Insulation & Asbestos Consultancy Limited | Administrative & support | 2015 |
| Jpsj Limited | Real estate | 2025 |
| Jp’S 24 Hour Recovery Limited | Wholesale & retail | 2020 |
| JQS Services Ltd | Professional & scientific | 2023 |
| JR Aerostructures Solutions Limited | Administrative & support | 2024 |
| JR Lofts Warrington Ltd | Construction | 2024 |
| JR NW Limited | Health & social care | 2025 |
| JR Padgate Stores Limited | Wholesale & retail | 2023 |
| JR Plumbing & Heating 21 Ltd | Construction | 2026 |
| JR Radiology Limited | Administrative & support | 2025 |
| Jrab Property Ltd | Real estate | 2019 |
| JRB Technical Engineering Limited | Professional & scientific | 2018 |
| JRC Design Services Limited | Information & communication | 2017 |
| JRC Telecommunications Limited | Construction | 2022 |
| JRC Transport Consulting Limited | Other services | 2017 |
| JRG Industrial Cladding Limited | Construction | 2021 |
| JRJ Engineering Ltd | Construction | 2021 |
| Jrjl Services Limited | Construction | 2014 |
| JRS Consultancy Services (NW) Limited | Health & social care | 2020 |
| JRS Design Solutions Limited | Administrative & support | 2014 |
| JRT Estates Limited | Financial services | 2019 |
| JRT Investments Ltd | Real estate | 2019 |
| JRT Properties (NW) Limited | Real estate | 2006 |
| Jrta Limited | Information & communication | 2011 |
| JS Bespoke Carpentry and Joinery Ltd | Construction | 2025 |
| JS Clean BIZ Network Limited | Administrative & support | 2025 |
| JS Football Limited | Education | 2025 |
| JS Grewal Engineering Limited | Administrative & support | 2014 |
| JS Hansra Ltd | Transport & logistics | 2021 |
| JS Homecare Ltd | Health & social care | 2022 |
| JS Oral Surgery Ltd | Health & social care | 2018 |
| JS Project Engineering Limited | Administrative & support | 2012 |
| JS Properties & Lettings Ltd | Real estate | 2016 |
| JS Quality Services Ltd | Administrative & support | 2026 |
| JS RAM Limited | Information & communication | 2018 |
| JS Scaffolding Ltd | Administrative & support | 2026 |
| JS Technology Consulting Ltd | Information & communication | 2026 |
| JS. Accountants & Business Advisors Limited | Professional & scientific | 2023 |
| JS. Audit Limited | Professional & scientific | 2023 |
| JSB Property Investments Ltd | Real estate | 2020 |
| JSB2 Limited | Health & social care | 2025 |
| Jsbco Limited | Health & social care | 2024 |
| JSC Engineering Consulting Limited | Professional & scientific | 2022 |
| JSC Mechanical Ltd | Construction | 2024 |
| JSD Design Ltd | Professional & scientific | 2017 |
| JSE Engineering Services Ltd | Administrative & support | 2023 |
| Jsea Marine & Diving Limited | Manufacturing | 2025 |
| JSG Rail Services Ltd | Professional & scientific | 2018 |
| JSJ RAD Limited | Health & social care | 2012 |
| JSJ Tech Solutions Limited | Professional & scientific | 2023 |
| JSJ Technical Limited | Administrative & support | 2015 |
| JSK Installations Ltd | Administrative & support | 2026 |
| JSK Psychological Solutions Limited | Extraterritorial | 2016 |
| JSM Consultants Limited | Administrative & support | 2025 |
| Jsmpower Ltd | Administrative & support | 2024 |
| Jsos Education Limited | Education | 2026 |
| JSP Haulage Ltd | Transport & logistics | 2022 |
| Jspw Engineering Limited | Administrative & support | 2025 |
| Jsquare Stores Limited | Wholesale & retail | 2025 |
| JSS Engineering Limited | Administrative & support | 2012 |
| Jswc Holdings Ltd | Manufacturing | 2025 |
| JT Consultants Limited | Other services | 2019 |
| JT Estimating Services Ltd | Construction | 2019 |
| JT IT Solutions Limited | Information & communication | 2019 |
| JT Logistics Systems Consulting Ltd | Information & communication | 2011 |
| JT MED Ltd | Administrative & support | 2025 |
| JT Swingland Limited | Administrative & support | 2016 |
| Jtac-Electrics Ltd | Construction | 2015 |
| Jtbv Group Ltd | Wholesale & retail | 2020 |
| JTC Data Needs Ltd | Professional & scientific | 2026 |
| JTL Media Ltd | Information & communication | 2023 |
| JTN Properties Ltd | Real estate | 2022 |
| JTP Engineering Services Limited | Professional & scientific | 2016 |
| Jtpm Services Ltd | Administrative & support | 2026 |