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| Ctackllyna Ltd | Information & communication | 2026 |
| Ctads Ltd | Wholesale & retail | 2010 |
| CTD London Limited | Wholesale & retail | 2016 |
| CTF Events Limited | Hospitality | 2024 |
| Ctfelectrical Ltd | Construction | 2019 |
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| CTM Welding & Fabrication Limited | Manufacturing | 2018 |
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| Ctrl ALT Design Ltd | Professional & scientific | 2018 |
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