| Hydrojet LLP | | 2022 |
| Hyland Electrics Limited | Manufacturing | 2010 |
| I and J Properties (Residential) Limited | Real estate | 2016 |
| IAN Warburton Financial Limited | Financial services | 2011 |
| Idvies Farms Limited | Agriculture & fishing | 2001 |
| Imajica Consulting Ltd | Professional & scientific | 2022 |
| Inari Holdings Limited | Agriculture & fishing | 2022 |
| Incisive Strategic Operations Limited | Professional & scientific | 2026 |
| Ingledew Aviation Services Ltd | Transport & logistics | 2015 |
| Inglis and Carr Limited | Professional & scientific | 2020 |
| International Society of Oncology and Biomarkers | Professional & scientific | 2014 |
| Inverforth Limited | Real estate | 2004 |
| IRD Productions Ltd | Information & communication | 2024 |
| Iron Mountain Development Limited | Construction | 2020 |
| J & C Millar Limited | Administrative & support | 2015 |
| J & J Lindsay Farming Limited | Agriculture & fishing | 2011 |
| J a Batchelor Limited | Construction | 2005 |
| J Coventry Plumbing & Heating Ltd | Construction | 2013 |
| J F S Architects LLP | | 2006 |
| J M Watson Limited | Administrative & support | 2004 |
| J Milne Electrical Limited | Manufacturing | 2012 |
| J Reavley Property Limited | Real estate | 2017 |
| J S J Solutions Limited | Construction | 2019 |
| J&J Hospitality Services Ltd | Hospitality | 2025 |
| J&J Laird Mobile MIX Limited | Manufacturing | 2014 |
| J&J Training Services Ltd | Education | 2025 |
| J&N Investments Scotland Ltd | Real estate | 2021 |
| J.D.R.B. Limited | Wholesale & retail | 2002 |
| J.G. Porter Contractors Limited | Agriculture & fishing | 2014 |
| Jack & Jill's Elite Nursery Limited | Health & social care | 2019 |
| Jackson Surveyors Limited | Real estate | 2019 |
| James Alan Construction Limited | Construction | 2009 |
| James Cramond Limited | Wholesale & retail | 2003 |
| James Findlay Ltd | Agriculture & fishing | 2026 |
| JAR Leisure Ltd | Hospitality | 2023 |
| Jarron Farms Limited | Agriculture & fishing | 1995 |
| JDM Designs Forfar Ltd | Other services | 2021 |
| JK & GG Limited | Construction | 2019 |
| JM Automotive Repair Limited | Wholesale & retail | 2023 |
| Jmac Plumbing & Heating Ltd | Construction | 2008 |
| Jndow Consulting Limited | Health & social care | 2017 |
| Joe’S Workshop Ltd | Professional & scientific | 2021 |
| John G Alexander Limited | Agriculture & fishing | 2003 |
| John Knox Farms Limited | Agriculture & fishing | 2002 |
| John Mcintosh Electrical Ltd | Construction | 2012 |
| John Stuart (Murrial) Limited | Agriculture & fishing | 1990 |
| Jordan and Emma Sinclair Ltd | Hospitality | 2020 |
| JP Minicoaches Limited | Wholesale & retail | 2004 |
| JSA Projects Ltd | Construction | 2026 |
| Jubilant Fast Food Limited | Hospitality | 2024 |
| Juniper Pheasantry Ltd | Agriculture & fishing | 2023 |
| K.E.S.R Developments Ltd | Construction | 2022 |
| Katz Launderettes Ltd | Transport & logistics | 2024 |
| Kearra Limited | Real estate | 2024 |
| Keith Falconer Mortgage Services Ltd | Financial services | 2016 |
| Keli Tots Limited | Education | 2016 |
| Keli Tots Market ST Ltd | Health & social care | 2026 |
| Kelvin Hotel (Oban) Ltd | Hospitality | 2008 |
| Kendale Hall Limited | Health & social care | 2023 |
| Kenlygreen Farms Limited | Agriculture & fishing | 2008 |
| Kenlygreen Potatoes Limited | Agriculture & fishing | 2017 |
| Kennedy Care Group (Holdings) Limited | Health & social care | 2022 |
| Kinburn (208) Limited | Professional & scientific | 2018 |
| Kingston Place Limited | Real estate | 2014 |
| Kinnell Ventures Ltd | Wholesale & retail | 2014 |
| Kintyre Country Homes Limited | Construction | 2006 |
| Kirkgait Enterprises Ltd | Extraterritorial | 2008 |
| Kirkton Energy Limited | Energy | 2024 |
| Kirriemuir District Agricultural Association | Other services | 1992 |
| KJC Medical Ltd | Health & social care | 2024 |
| KJS Site Services Ltd | Construction | 2025 |
| KK Accounting & Taxation Services Limited | Professional & scientific | 2014 |
| KM Industrial & Agricultural Buildings Limited | Construction | 2016 |
| Kvcangus Limited | Administrative & support | 2016 |
| L and M Scaffolding Limited | Administrative & support | 2015 |
| Laird Brothers (Forfar) Limited | Manufacturing | 1961 |
| Land Management (Scotland) Ltd. | Financial services | 2003 |
| Lasco Services Ltd | Mining & quarrying | 2019 |
| Lasermad Limited | Manufacturing | 2016 |
| LAT Aviation Ltd | Manufacturing | 2022 |
| Lawhill Wind Limited | Energy | 2014 |
| LBS Piping Services Limited | Professional & scientific | 2022 |
| LD Engineering Ltd | Professional & scientific | 2026 |
| LEE Hutcheon Painter & Decorator Limited | Construction | 2013 |
| Leisure Holiday Homes Ltd. | Hospitality | 2006 |
| Lemon Tree Nursery Forfar Limited | Health & social care | 2017 |
| Letham Dispensary Ltd | Professional & scientific | 2009 |
| Letham Storage Limited | Transport & logistics | 2026 |
| Lewis Shannen Ltd. | Agriculture & fishing | 1996 |
| Linetech Services Ltd | Construction | 2022 |
| Linlathen Farms Limited | Agriculture & fishing | 1963 |
| Linlathen Properties Limited | Real estate | 2026 |
| Lisa Barclay Accountancy Services Ltd | Professional & scientific | 2009 |
| Live Wire HSE Consultancy Ltd | Professional & scientific | 2019 |
| LIZ Freeman Limited | Professional & scientific | 2008 |
| Lncompany Limited | Transport & logistics | 2025 |
| Lochend Lease Limited | Real estate | 2008 |
| Lochlands Rentals Ltd | Real estate | 2013 |
| Lochside Vehicle Services Limited | Wholesale & retail | 2005 |
| Longparke Limited | Wholesale & retail | 2015 |