| JW Mobile Tyres Ltd | Wholesale & retail | 2026 |
| Jw's Roofing Company Ltd | Construction | 2021 |
| JWD Estates Limited | Real estate | 2016 |
| K & M 829 Ltd | Hospitality | 2026 |
| K & O Oral Care Ltd | Health & social care | 2023 |
| K C Dalgleish Limited | Arts & recreation | 2024 |
| K Rodman Distribution Ltd | Wholesale & retail | 2024 |
| K S Power Consulting Limited | Professional & scientific | 2019 |
| K Waddell Contracting Ltd | Agriculture & fishing | 2025 |
| K&J 333 Limited | Other services | 2025 |
| K&K Bathroom Solutions Ltd | Construction | 2026 |
| K&S Civil Contracts (Scot) Ltd | Construction | 2020 |
| K&S Electrical (SCO) Limited | Construction | 2020 |
| K&S Property Holdings Ltd | Real estate | 2020 |
| K&S Utilities Limited | Administrative & support | 2019 |
| K.J Bathroom & Kitchen Ltd | Construction | 2019 |
| K.J Bathrooms Ltd | Construction | 2023 |
| K.J.M. Property (Scotland) Ltd | Households | 2019 |
| K1 Dental Ltd | Health & social care | 2021 |
| K1 Property Holdings Ltd | Real estate | 2026 |
| Kacee Properties Ltd | Real estate | 2018 |
| Kailash Restaurants Limited | Hospitality | 2024 |
| Kaizen Financial Care Ltd | Financial services | 2025 |
| Kalash Enterprise Ltd | Other services | 2025 |
| Kalea Kitchen Ltd | Hospitality | 2021 |
| Kallanwood Ltd | Hospitality | 2025 |
| Kana Properties Leicester Ltd | Real estate | 2017 |
| Kane Landscape Design Ltd | Administrative & support | 2021 |
| Kansara Consulting Ltd | Education | 2025 |
| Kare Properties Ltd | Real estate | 2016 |
| Karen Yuill Recovery Limited | Transport & logistics | 2003 |
| Karia Investments Limited | Real estate | 2016 |
| Karla Black Limited | Arts & recreation | 2012 |
| Karwal Properties Ltd | Real estate | 2018 |
| KAT Holdings Ltd | Real estate | 2021 |
| Katemi Commercial SCO Limited | Construction | 2025 |
| Katiekoo Ltd | Construction | 2022 |
| KAY Cassells (Properties) Limited | Real estate | 1978 |
| Kaybee Consulting Ltd | Information & communication | 2015 |
| Kayclaire LLP | | 2010 |
| Kayz Transport Limited | Transport & logistics | 2016 |
| KB School of Motoring Ltd | Education | 2025 |
| KB Vintage Limited | Real estate | 2025 |
| KCD Scotland UK LLP | | 2016 |
| Kcjep Limited | Professional & scientific | 2025 |
| KCL Group Limited | Construction | 2018 |
| KCM Locum Limited | Health & social care | 2022 |
| KD Bodyworks Limited | Other services | 2026 |
| KDB Holdings Limited | Real estate | 2015 |
| KDP Properties Leicester Limited | Real estate | 2020 |
| KE Property Developments Limited | Construction | 2025 |
| Keldec (UK) Limited | Professional & scientific | 2014 |
| Kelvin Machines Limited | Manufacturing | 2014 |
| Kelvindale Holdings Limited | Construction | 2017 |
| Kemp Construction (Scotland) Limited | Construction | 2011 |
| Kendall Residential Ltd. | Real estate | 2003 |
| Kennedies Farm Livery LLP | | 2005 |
| Kenneth Moore (Inverness) Limited | Wholesale & retail | 2000 |
| Kenneth Wilson (Motors) Limited | Real estate | 1932 |
| Kenneve Property Ltd | Real estate | 2024 |
| Kerr & Taggart Signature Homes Ltd | Construction | 2020 |
| Kerr-Tech Motor Engineers Limited | Wholesale & retail | 2012 |
| Kerrtech Automotive Ltd | Wholesale & retail | 2022 |
| Kerrwood Electrical Services Ltd | Construction | 2019 |
| KF Cars Limited | Wholesale & retail | 2022 |
| KFB Chiro Ltd | Health & social care | 2023 |
| KG Medtech Recruitment Specialists Limited | Administrative & support | 2025 |
| KH7 Ltd | Arts & recreation | 2025 |
| Khalsa Leaves Ltd | Other services | 2025 |
| Khamace Ltd | Wholesale & retail | 2023 |
| Khoda Properties Ltd | Real estate | 2016 |
| KHS Accounting Ltd | Professional & scientific | 2018 |
| KI North Star Properties Ltd | Real estate | 2024 |
| Kibel Global Services Ltd | Administrative & support | 2025 |
| Kikao Homes Ltd | Real estate | 2024 |
| Kiki International Limited | Administrative & support | 2019 |
| Kilchousland Consulting Ltd | Professional & scientific | 2019 |
| Kilcoyne Dental Care Ltd | Health & social care | 2022 |
| Kilgarth Development Company Limited | Extraterritorial | 1999 |
| Kilgarth Investments Limited | Construction | 2010 |
| Killygore Investments Limited | Financial services | 2023 |
| Kilmeny Trading Ltd | Wholesale & retail | 2023 |
| Kiltmaker & Co Limited | Manufacturing | 2018 |
| Kindley RE Ltd. | | 2022 |
| King & Country Ltd | Manufacturing | 2017 |
| King FPM Solutions Limited | Professional & scientific | 2012 |
| Kingsley Park Racing Ltd | Professional & scientific | 2014 |
| Kinloch Management Ltd | Professional & scientific | 2021 |
| Kinn Equity Ltd | Professional & scientific | 2022 |
| Kinross Optical Ltd | Wholesale & retail | 2024 |
| Kintrean Capital Ltd | Professional & scientific | 2025 |
| Kintrean Property Ltd | Real estate | 2025 |
| Kintyre Connections Limited | Professional & scientific | 2019 |
| Kirkhill Contracts Limited | Construction | 2020 |
| Kirkhill Decorators Ltd | Construction | 2019 |
| Kirktay Limited | Professional & scientific | 2007 |
| Kismet Investments Ltd. | Real estate | 2000 |
| Kitchen Refurb Scotland Ltd | Construction | 2026 |
| KJ (Blantyre) Ltd | Hospitality | 2019 |
| KLX Tuning & Diagnostics Ltd | Wholesale & retail | 2022 |