| Thomson Timber Ltd. | Agriculture & fishing | 2000 |
| Throat Punch Coffee Company Ltd | Wholesale & retail | 2018 |
| Thync Partners Ltd | Professional & scientific | 2021 |
| Tillylodge Consultancy Ltd | Professional & scientific | 2021 |
| TIME4 Property Services Limited | Real estate | 2023 |
| TKC Engineering Ltd | Professional & scientific | 2017 |
| Top to Floor CS Ltd | Administrative & support | 2022 |
| Total Balance Spinal Health Ltd | Health & social care | 2025 |
| TR Well Control Engineering Services Ltd | Professional & scientific | 2024 |
| Tradesmen Service Care Limited | Construction | 1997 |
| Trangam Engineering Limited | Professional & scientific | 2025 |
| Trans Caledonia LLP | | 2025 |
| Transform Flooring Solutions Ltd | Construction | 2021 |
| Transition Clean Solutions Limited | Mining & quarrying | 2020 |
| Travers Flooring Ltd | Construction | 2025 |
| Trees ARE US Limited | Agriculture & fishing | 2020 |
| Triple a Fishing Ltd | Agriculture & fishing | 2024 |
| Trix Catering Services Ltd | Hospitality | 2025 |
| TT Earth Science Ltd | Professional & scientific | 2015 |
| Tubular Wells Consultancy Limited | Professional & scientific | 2000 |
| Tucson North International Ltd. | Professional & scientific | 1995 |
| Tullymet Software Limited | Information & communication | 2020 |
| Tuxcat Pawduction Ltd | Information & communication | 2025 |
| Two Across Ltd | Professional & scientific | 2024 |
| UK Deepwater Limited | Professional & scientific | 2021 |
| UK PFR Ltd | Wholesale & retail | 2016 |
| Underwater Project Management Limited | Mining & quarrying | 2023 |
| Urbanrose Property Ltd | Real estate | 2026 |
| Value Performance Ltd | Other services | 2011 |
| Vasspetro Limited | Professional & scientific | 2020 |
| Vessel Technology Ltd | Manufacturing | 2016 |
| VIP H Barber Ltd | Other services | 2025 |
| W S V Services Limited | Professional & scientific | 2005 |
| W.M Coaching Ltd | Education | 2025 |
| Wallace Practice Limited | Health & social care | 2018 |
| Watson Equipment Hire Ltd | Professional & scientific | 2025 |
| Weights and Measures Baking Company Limited | Manufacturing | 2024 |
| Well Operations Limited | Professional & scientific | 2024 |
| Welldecommissioned UK Limited | Mining & quarrying | 2021 |
| Wellfold Gardening and Landscaping Ltd | Administrative & support | 2022 |
| West END Drilling Limited | Mining & quarrying | 1998 |
| West END Properties (Aberdeen) Limited | Real estate | 2013 |
| West High Street Ltd | Real estate | 2020 |
| Wester Nine Limited | Agriculture & fishing | 2022 |
| Westville Group Limited | Real estate | 2018 |
| Wilderness Spa Ltd | Administrative & support | 2026 |
| Wildfall Limited | Hospitality | 2023 |
| Williamson PPU Services Ltd | Professional & scientific | 2022 |
| Witness Hire Ltd | Professional & scientific | 2017 |
| Woodend Arts Limited | Arts & recreation | 2011 |
| Woodlands Nursery (Banchory) Limited | Health & social care | 2010 |
| Wright's Offshore Solutions Ltd | Professional & scientific | 2018 |
| Wøulv Ltd | Manufacturing | 2022 |
| XMT Subsea Ltd | Professional & scientific | 2014 |
| Yarmain Hairdressers Limited | Other services | 2008 |
| Yellow Jeans - Early Years Ltd | Education | 2025 |
| Yellow Jeans CIC | Education | 2025 |
| Zeal Engineering Services Ltd | Professional & scientific | 2022 |
| Zegen Energy Ltd | Professional & scientific | 2020 |
| Zernebok Ltd | Information & communication | 2009 |