| JAT Accounting Services Ltd | Professional & scientific | 2024 |
| Jatli Ltd | Wholesale & retail | 2025 |
| JAU Investments Limited | Real estate | 2016 |
| Jaunty Paws Ltd | Other services | 2018 |
| Javad Construction Limited | Construction | 2001 |
| Javelin Holdings Limited | Financial services | 2026 |
| Javen Products Ltd | Manufacturing | 2006 |
| JAW Consulting UK Ltd | Information & communication | 2008 |
| JAW Jobs Ltd | Information & communication | 2020 |
| Jawotrans Ltd | Transport & logistics | 2015 |
| JAX & SON Ltd | Real estate | 2025 |
| JAX Fulla Flava Ltd | Extraterritorial | 2025 |
| Jax-Glam Beauty Ltd | Other services | 2025 |
| Jaximo Ltd | Professional & scientific | 2021 |
| JAY & JAY Partnership Limited | Professional & scientific | 2002 |
| JAY Build Ltd | Construction | 2021 |
| JAY Burt Web Development Ltd | Information & communication | 2023 |
| JAY Construction Bristol Limited | Construction | 2019 |
| JAY Jays Hair Care Centres Limited | Other services | 2011 |
| JAY Maintenance Services Ltd | Construction | 2025 |
| JAY Menon Limited | Health & social care | 2012 |
| Jay's Cleaning Services Bristol Ltd | Administrative & support | 2026 |
| Jayamanna Limited | Other services | 2013 |
| Jayamanna Properties Ltd | Real estate | 2024 |
| Jaybird Press Ltd | Information & communication | 2017 |
| Jayde’S Driving School Ltd | Education | 2025 |
| Jaygees Bristol Limited | Construction | 2003 |
| Jaymak’S Ltd | Other services | 2026 |
| Jaymar Ltd | Health & social care | 2015 |
| Jaymo Limited | Professional & scientific | 2023 |
| Jayne Goulding Limited | Professional & scientific | 2015 |
| Jays Holdings Ltd | Real estate | 2024 |
| JAZ Building Limited | Other services | 2024 |
| JAZ Cottam Ltd | Professional & scientific | 2022 |
| Jaziste Limited | Health & social care | 2015 |
| Jaznova Support Services Ltd | Health & social care | 2026 |
| Jazurek Transport Ltd | Administrative & support | 2022 |
| Jazz Bristol Ltd | Other services | 2025 |
| JB & DT Limited | Agriculture & fishing | 2026 |
| JB Bricklaying Limited | Construction | 2016 |
| JB Coaching and Counselling Limited | Professional & scientific | 2020 |
| JB Communications (Bristol) Ltd | Construction | 2023 |
| JB Construction Management Limited | Construction | 2016 |
| JB Consultancy Solutions Ltd | Professional & scientific | 2024 |
| JB Decorating Services Ltd | Construction | 2018 |
| JB Electronics Limited | Professional & scientific | 2015 |
| JB Foods Stroud Limited | Wholesale & retail | 2024 |
| JB Group Property Investments Ltd | Real estate | 2025 |
| JB Masonry Ltd | Construction | 2020 |
| JB Pictures Limited | Information & communication | 2014 |
| JB Plastering and Damp Proofing Ltd | Construction | 2017 |
| JB Procurement Limited | Administrative & support | 2008 |
| JB Property Futures Ltd | Real estate | 2019 |
| JB Property Management Services Limited | Real estate | 2025 |
| JB Renovations & Waste Solutions Limited | Water & waste | 2025 |
| JB SDG Surgical Limited | Health & social care | 2024 |
| JB Training & Consultancy Ltd | Education | 2019 |
| JB Training and Events Ltd | Education | 2020 |
| JBD Group Ltd | Wholesale & retail | 2016 |
| JBD Law Limited | Professional & scientific | 2014 |
| Jbes Southern Ltd | Construction | 2024 |
| JBF Media Growth Ltd | Professional & scientific | 2026 |
| JBH BS3 Ltd | Other services | 2024 |
| JBJ Places Ltd | Real estate | 2016 |
| JBL Property Management Ltd | Real estate | 2022 |
| JBL South West Developments Limited | Construction | 2025 |
| JBL Windows & Building Services Limited | Construction | 2021 |
| Jbms Bristol Ltd | Construction | 2011 |
| Jbncleaning Ltd | Administrative & support | 2024 |
| Jbpc Carpentry Ltd | Manufacturing | 2026 |
| Jbphysioplus Ltd | Health & social care | 2025 |
| Jbpm Delivery Ltd | Transport & logistics | 2021 |
| JBR Engineering Research Limited | Manufacturing | 2014 |
| JBR Refurbishments Ltd | Wholesale & retail | 2024 |
| JBS Bristol Ltd | Real estate | 2016 |
| JBS Bristol Property Holdings Ltd | Real estate | 2021 |
| JBS Lofts Ltd | Construction | 2016 |
| JBS Media Limited | Arts & recreation | 2001 |
| JBS Ring Ltd | Hospitality | 2024 |
| JBT Estate Holdings Ltd | Real estate | 2023 |
| JBZ Homes Limited | Real estate | 2017 |
| JBZ Management Ltd | Real estate | 2025 |
| JC 4X4 Ltd | Wholesale & retail | 2007 |
| JC Clarke Properties LLP | | 2025 |
| JC Commercial Limited | Construction | 2023 |
| JC Construction Services SW Ltd | Professional & scientific | 2023 |
| JC DEC Ltd | Construction | 2023 |
| JC Developments (Bristol) Limited | Construction | 2018 |
| JC Flooring Contractors Limited | Construction | 2021 |
| JC Full Body Fitness (Keynsham) Ltd | Arts & recreation | 2024 |
| JC Full Body Fitness Ltd | Arts & recreation | 2017 |
| JC Global Capital Ltd | Financial services | 2023 |
| JC Gourmet Property Limited | Construction | 2021 |
| JC Light Haulage and Removals Limited | Transport & logistics | 2023 |
| JC Lighting Ltd | Extraterritorial | 2024 |
| JC Project Management Limited | Professional & scientific | 2022 |
| JC Project Resource Ltd | Professional & scientific | 2008 |
| JC Properties South West Ltd | Real estate | 2025 |
| JC Tile Ltd | Construction | 2024 |
| JC6 Consulting Ltd | Professional & scientific | 2026 |