| IW GP Limited | Administrative & support | 2009 |
| IW Holdings LP | | 2009 |
| IWISE2EBUSINESS Ltd. | Information & communication | 2010 |
| IWORK4ME | Health & social care | 2009 |
| IX Design UK Ltd | Information & communication | 2016 |
| IXC I (Scotland) Ltd | Financial services | 2019 |
| IXC I FP LP | | 2019 |
| Ixtapansal LP | | 2004 |
| Ixtra Services Limited | Professional & scientific | 2010 |
| Iyemwensogie Ltd | Health & social care | 2012 |
| IZ Trading LP | | 2017 |
| Izaan Retail Ltd | Wholesale & retail | 2019 |
| Izarrayne Ltd | Wholesale & retail | 2025 |
| Izartrans Ltd | Transport & logistics | 2024 |
| Izen Photographic Limited | Professional & scientific | 2021 |
| Izertis Projecting Ltd | Information & communication | 2009 |
| Izettle Co-Investment CI LP | | 2015 |
| Izifly Corp LP | | 2016 |
| Izora Trading LP | | 2017 |
| J & a Taxis Ltd. | Transport & logistics | 2000 |
| J & B Scotland Limited | Professional & scientific | 1976 |
| J & D Investment Management Ltd | Extraterritorial | 2012 |
| J & E Chapman Ltd | Hospitality | 2025 |
| J & F Ferguson Holdings Limited | Financial services | 2026 |
| J & J International Trading Group | | 1994 |
| J & J Investment Group Ltd | Real estate | 2025 |
| J & J Investments 1997 Limited | Real estate | 1984 |
| J & J Perry Limited | Health & social care | 2007 |
| J & J Properties Scotland Ltd. | Real estate | 2017 |
| J & K Bros. Ltd | Wholesale & retail | 2023 |
| J & L Munro Property Ltd | Real estate | 2024 |
| J & L Wong Limited | Real estate | 2002 |
| J & M Cameron Properties Limited | Hospitality | 1987 |
| J & M Myreside Ltd. | Professional & scientific | 2024 |
| J & S Edin Enterprise Limited | Real estate | 2022 |
| J & T Edinburgh Limited | Hospitality | 2020 |
| J & T Harvey Decorators Limited | | 1960 |
| J & V Boutique Limited | Wholesale & retail | 2025 |
| J & W Hardie Limited | Manufacturing | 1996 |
| J & W Shopfitting Ltd. | Construction | 2006 |
| J a Wellbeing and Beauty Ltd | Other services | 2017 |
| J and K Traquair Limited | Agriculture & fishing | 2024 |
| J Beelive Ltd | Wholesale & retail | 2024 |
| J Borthwick Commercial Ltd | Wholesale & retail | 2021 |
| J Borthwick Haulage Ltd | Transport & logistics | 2021 |
| J Burt Decor Ltd | Construction | 2015 |
| J C Michael (Scotland) Ltd | Health & social care | 2021 |
| J Clark Plastering Limited | Construction | 2019 |
| J Cunningham Couriers Ltd | Transport & logistics | 2019 |
| J D Collections Ltd | Administrative & support | 2013 |
| J D Holdings (Edinburgh) Ltd | Real estate | 2016 |
| J Dillon Holdings Ltd | Financial services | 2026 |
| J Docherty Roofing & Property Maintenance Ltd | Construction | 2016 |
| J G Chierchia Ltd. | Hospitality | 2005 |
| J H Wholeness Incorporated Ltd | Wholesale & retail | 2021 |
| J I Steel Enterprises Ltd | Real estate | 2024 |
| J J Beam Limited | Hospitality | 1991 |
| J K Mccrone Electrical Services LLP | | 2018 |
| J L B Property (Scotland) Limited | Real estate | 2004 |
| J Landa Property Limited | Real estate | 2024 |
| J M J Joinery Limited | Construction | 2016 |
| J Mackay Accountants Ltd | Professional & scientific | 2011 |
| J N Gillespie Limited | Professional & scientific | 2014 |
| J Newton Services Limited | Other services | 2020 |
| J O Premier Motors Limited | Wholesale & retail | 2024 |
| J P L Food Co Ltd | Hospitality | 2011 |
| J P Taxis Limited Partnership | | 2004 |
| J R CARE24/7 Ltd | Administrative & support | 2022 |
| J R Global Limited | Transport & logistics | 2013 |
| J R Wright & Co Limited | Construction | 2003 |
| J S Accounting Services Limited | Professional & scientific | 2008 |
| J S Crawford Contracts (Borders) Limited | Construction | 1975 |
| J S Wang Ltd | Hospitality | 2012 |
| J Sharp Records Limited | Information & communication | 2014 |
| J W Seafoods Limited | Professional & scientific | 1981 |
| J&D Ramsay Ltd | Professional & scientific | 2025 |
| J&F Realty Ltd | Real estate | 2022 |
| J&G Group Limited | Hospitality | 2017 |
| J&J Health Equipment LP | | 2018 |
| J&J Runcie Plasterers Limited | Construction | 2008 |
| J&L Contractors (Scotland) Limited | Construction | 2025 |
| J&L Properties (Scot) Ltd | Construction | 2026 |
| J&L Properties (Scotland) Limited | Construction | 2018 |
| J&L Roadsurfacing Scotland Ltd | Construction | 2019 |
| J&L Stair Cleaning Ltd | Administrative & support | 2017 |
| J&M Mackay Ltd | Education | 2024 |
| J&P Brady Limited | Professional & scientific | 2015 |
| J&S North Limited | Hospitality | 2026 |
| J&S Software Services Limited | Information & communication | 2022 |
| J&S Trading AS Smash N’ Grab Ltd | Hospitality | 2025 |
| J&T Edinburgh Properties Ltd | Real estate | 2022 |
| J&V Rendering Ltd | Construction | 2018 |
| J. a & a Properties Ltd | Households | 2019 |
| J. a. Plumbing Services (Edin) Ltd. | Other services | 2017 |
| J. Lizars (Aberdeen) Limited | Wholesale & retail | 1955 |
| J. Rennie Taxis Ltd. | Professional & scientific | 2000 |
| J.A. Easson Pipefitting & Surveying Ltd | Manufacturing | 2025 |
| J.A.H. Design Company Limited | Administrative & support | 1991 |
| J.A.M. Universal LP | | 2013 |
| J.B. Divine Provisions Ltd | Health & social care | 2013 |