| WW Decor Ltd | Construction | 2021 |
| WW Rentals Ltd | Real estate | 2024 |
| WW Soft Play Limited | Arts & recreation | 2013 |
| Wysdom Dental Technologies Limited | Information & communication | 1988 |
| X-Met (Scotland) Holdings Limited | Professional & scientific | 2012 |
| X-Met (Scotland) Limited | Manufacturing | 2013 |
| X-Met Fabrication Limited | Manufacturing | 2012 |
| X-Met Finishing Limited | Manufacturing | 2012 |
| X402 Ltd. | Information & communication | 2004 |
| X7 Commercial Limited | Wholesale & retail | 2025 |
| Xena Tech Ltd | Wholesale & retail | 2025 |
| XL99 Ltd | Hospitality | 2024 |
| Xmac Ltd | Construction | 2021 |
| Xman Properties Ltd | Real estate | 2023 |
| XO Zero 5 Limited | Professional & scientific | 2021 |
| Y&Z Scotland Ltd | Real estate | 2022 |
| Yeetung Trading Limited | Hospitality | 2026 |
| YEG 7 Ltd | Wholesale & retail | 2026 |
| Yesudas Ltd | Health & social care | 2015 |
| Yiang Ltd | Real estate | 2017 |
| Ynot Business Solutions Ltd | Professional & scientific | 2021 |
| Yoco Technology Limited | Extraterritorial | 2020 |
| Yogis Yard Ltd | Agriculture & fishing | 2026 |
| Yorkshire Trading UK Limited | Wholesale & retail | 2021 |
| YOU ARE Ammazing Limited | Education | 2024 |
| Young Roughcasting Ltd. | Construction | 2012 |
| Yousuf Enterprises Scot Ltd | Wholesale & retail | 2026 |
| Yretire Limited | Professional & scientific | 2020 |
| Yz-Tech Ltd | Information & communication | 2025 |
| Z&H Collective Ltd | Wholesale & retail | 2026 |
| Zaidan Healthcare Limited | Health & social care | 2023 |
| Zaify Heating&Plumbing Ltd | Construction | 2022 |
| Zakara Estates Limited | Real estate | 2025 |
| ZAN Traders Ltd | Administrative & support | 2020 |
| Zcrbn Ltd | Manufacturing | 2023 |
| Zestycart Limited | Wholesale & retail | 2025 |
| Zeus Access Solutions Limited | Construction | 2017 |
| Zhong YUN 888 Ltd | Hospitality | 2023 |
| Zimal Enterprises Ltd | Hospitality | 2023 |
| Zucca Bistro Limited | Hospitality | 2003 |
| ZUK Group Ltd | Wholesale & retail | 2025 |
| Zulhan Limited | Health & social care | 2012 |
| Zunaisha Abrar Limited | Hospitality | 2026 |
| Zura Online Limited | Information & communication | 2026 |
| ZY Oldco Ltd | Wholesale & retail | 2005 |
| ZZ Delivery Ltd | Transport & logistics | 2025 |
| ØYE Streetwear Ltd | Wholesale & retail | 2023 |