| Jannet Hopewell Incorporated Ltd | Administrative & support | 2021 |
| Jansen Impex LP | | 2015 |
| Jansen Industries LP | | 2016 |
| Jante One LP | | 2016 |
| Januarius SP | | 2001 |
| Januks Russell Properties Ltd | Real estate | 2025 |
| Janur LP | | 2004 |
| Janus Corporation L.P. | | 2009 |
| Janus Italia Limited | Financial services | 2025 |
| Januslabsim Consultants Ltd | Professional & scientific | 2022 |
| Janybar Trade LP | | 2019 |
| JAP Management Ltd | Extraterritorial | 2012 |
| Japan Auto Parts Direct Limited | Wholesale & retail | 2023 |
| Japos Limited | Administrative & support | 2010 |
| JAR (Scotland) Ltd | Construction | 2018 |
| JAR Project Management Ltd | Professional & scientific | 2013 |
| Jardine Phillips (Scotland) Ltd | Professional & scientific | 2012 |
| Jardine Property Developments Limited | Construction | 2025 |
| Jardwell Systems LP | | 2013 |
| Jarec Limited | Hospitality | 2023 |
| Jaro Cataly Ltd | Real estate | 2025 |
| Jarr Property Investment Ltd | Real estate | 2025 |
| Jarvis (Scotland) Limited | Wholesale & retail | 1966 |
| Jarvis King Associates Limited | Professional & scientific | 2004 |
| JAS Glasgow Limited | Wholesale & retail | 2025 |
| JAS IT Services Ltd | Wholesale & retail | 2007 |
| Jasberg Enterprise LP | | 2016 |
| Jasbir Kaur Limited | Wholesale & retail | 2021 |
| Jasbir Properties Edinburgh Limited | Hospitality | 2020 |
| Jaser Partnership LP | | 2014 |
| Jaser Technology LP | | 2012 |
| Jasmin French Ltd | Other services | 2023 |
| Jasmin French Weddings Ltd | Other services | 2024 |
| Jasmine Capital LP | | 2010 |
| Jasmine Corporation LP | | 2016 |
| Jasmine Holdings (Edinburgh) Limited | Financial services | 1999 |
| Jason Baxter Media Ltd | Information & communication | 2024 |
| Jason Berkley Limited Partnership | | 2022 |
| Jason Urquhart Ltd | Information & communication | 2024 |
| Jasoren LP | | 2014 |
| Jaspy Limited | Financial services | 2018 |
| Jaster Moving LP | | 2014 |
| Jatm Construction Limited | Construction | 2024 |
| Jato Ltd | Education | 2025 |
| Jatra Naturals Skincare Ltd | Wholesale & retail | 2024 |
| Jats Brothers Ltd | Wholesale & retail | 2023 |
| Java Moment Limited | Hospitality | 2017 |
| Javaidcompany Limited | Hospitality | 2025 |
| Javelo Health Limited | Professional & scientific | 2019 |
| Javit Properties Ltd | Households | 2022 |
| Javits Deliveries Ltd | Transport & logistics | 2024 |
| Javits Fish and Chips Ltd | Wholesale & retail | 2024 |
| Javits Gilmerton Ltd | Hospitality | 2024 |
| Javits Kebabs and Burgers Ltd | Wholesale & retail | 2024 |
| Javits Pizza Ltd | Wholesale & retail | 2024 |
| JAW Taste Limited | Hospitality | 2026 |
| JAX Signage & Graphics Ltd | Manufacturing | 2018 |
| Jaxdene Trading LP | | 2019 |
| JAY and Company Limited | Real estate | 1979 |
| JAY Bay Shipping LP | | 2012 |
| JAY Ganesh & Riya Limited | Hospitality | 2023 |
| Jayce Trading LP | | 2014 |
| Jaydee Heating Limited | Administrative & support | 1973 |
| Jayg Property Ltd | Real estate | 2025 |
| Jayich & Partners LP | | 2010 |
| Jayjaysco Ltd | Wholesale & retail | 2025 |
| Jaylen Trade LP | | 2013 |
| Jaymax Joinery Ltd. | Manufacturing | 2014 |
| Jays Taxis Ltd. | Professional & scientific | 2002 |
| Jazda Supermarket Ltd | Wholesale & retail | 2022 |
| Jaze NO 1 Management Ltd | Extraterritorial | 2012 |
| Jazz Commercial Ltd | Transport & logistics | 2023 |
| JB & Co Consulting Ltd | Professional & scientific | 2020 |
| JB Contracts (Scotland) Limited | Construction | 2006 |
| JB Courier Logistics Limited | Transport & logistics | 2026 |
| JB Food Ventures PVT Ltd | Administrative & support | 2018 |
| JB Itech Ltd | Information & communication | 2018 |
| JB Mitchell Ltd | Professional & scientific | 2017 |
| JB Ropes Ltd | Construction | 2024 |
| JB Villas Ltd | Hospitality | 2025 |
| JBC Wells Limited | Professional & scientific | 2019 |
| JBE Associates Limited | Professional & scientific | 2018 |
| Jbfell Ltd | Professional & scientific | 2023 |
| JBH Geoscience Ltd | Professional & scientific | 2025 |
| Jbhg Holdings Ltd | Financial services | 2022 |
| JBL Plant Services Limited | Construction | 2022 |
| Jbmc Respiratory Limited | Health & social care | 2017 |
| JBO Consultants Ltd | Professional & scientific | 2017 |
| JBW (77) Limited | Real estate | 2010 |
| JC Auto Solutions Ltd | Professional & scientific | 2025 |
| JC Development VRD L.P. | | 2010 |
| JC Ecig Limited | Wholesale & retail | 2015 |
| JC Edinburgh Ltd | Real estate | 2014 |
| JC Nubige Ltd | Wholesale & retail | 2022 |
| JC Selection Limited | Administrative & support | 2016 |
| JC Sports Limited | Other services | 2016 |
| JC28 Consultancy Limited | Professional & scientific | 2023 |
| Jcall Holdings | Other services | 2022 |
| JCB Building Ltd | Construction | 2019 |
| JCC Investment Management Ltd | Extraterritorial | 2010 |