Area Codes United Kingdom The Area Codes of United Kingdom: City/Town or Region Area code 1. Halifax 01422 (+441422) 2. Harris, Outer Hebrides 01859 (+441859) 3. Harthill 01501 (+441501) 4. Hartlepool 01429 (+441429) 5. Haslemere 01428 (+441428) 6. Hastings 01424 (+441424) 7. Hathersage 01433 (+441433) 8. Haverhill 01440 (+441440) 9. Hawick 01450 (+441450) 10. Hawkshead 015394 (+4415394) 11. Hay-on-Wye 01497 (+441497) 12. Haywards Heath 01444 (+441444) 13. Heathfield 01435 (+441435) 14. Helensburgh 01436 (+441436) 15. Helmsdale 01431 (+441431) 16. Helmsley 01439 (+441439) 17. Hemel Hempstead 01442 (+441442) 18. Henley-on-Thames 01491 (+441491) 19. Hereford 01432 (+441432) 20. High Wycombe 01494 (+441494) 21. Hinckley 01455 (+441455) 22. Hitchin 01462 (+441462) 23. Holbeach 01406 (+441406) 24. Holmes Chapel 01477 (+441477) 25. Holsworthy 01409 (+441409) 26. Holyhead 01407 (+441407) 27. Honington 01400 (+441400) 28. Honiton 01404 (+441404) 29. Hornby-with-Farleton 015242 (+4415242) 30. Hornsea and Patrington 01964 (+441964) 31. Horsham 01403 (+441403) 32. Huddersfield 01484 (+441484) 33. Hull 01482 (+441482) 34. Hungerford 01488 (+441488) 35. Hunstanton 01485 (+441485) 36. Huntingdon 01480 (+441480) 37. Huntly 01466 (+441466)