Els codis de l'àrea de Regne Unit:
| Ciutat/poble o zona | Codi de l'àrea | |
|---|---|---|
| 1. | Tain | 01862 |
| 2. | Tamworth | 01827 |
| 3. | Tarbert | 01880 |
| 4. | Tarporley | 01829 |
| 5. | Taunton | 01823 |
| 6. | Tavistock | 01822 |
| 7. | Telford | 01952 |
| 8. | Temple Cloud | 01761 |
| 9. | Thame | 01844 |
| 10. | Thanet | 01843 |
| 11. | Thetford | 01842 |
| 12. | Thirsk | 01845 |
| 13. | Thornhill | 01848 |
| 14. | Thurso and Tongue | 01847 |
| 15. | Tinto | 01864 |
| 16. | Tiverton | 01884 |
| 17. | Tobermory, Isle of Mull | 01688 |
| 18. | Tomatin | 01808 |
| 19. | Tomdoun | 01809 |
| 20. | Torquay | 01803 |
| 21. | Torrington | 01805 |
| 22. | Tranent | 01875 |
| 23. | Truro | 01872 |
| 24. | Tunbridge Wells | 01892 |
| 25. | Turriff | 01888 |
| 26. | Tyneside, Sunderland and Durham | 0191 |