Area Codes United Kingdom The Area Codes of United Kingdom: City/Town or Region Area code 1. Macclesfield 01625 (+441625) 2. Machynlleth 01654 (+441654) 3. Madingley 01954 (+441954) 4. Magherafelt (Northern Ireland) 02879 (+442879) 5. Maidenhead 01628 (+441628) 6. Maidstone 01622 (+441622) 7. Maldon 01621 (+441621) 8. Mallaig 01687 (+441687) 9. Malmesbury 01666 (+441666) 10. Malton 01653 (+441653) 11. Malvern 01684 (+441684) 12. Manchester 0161 (+44161) 13. Mansfield 01623 (+441623) 14. Market Deeping/Bourne 01778 (+441778) 15. Market Drayton 01630 (+441630) 16. Market Harborough 01858 (+441858) 17. Market Rasen 01673 (+441673) 18. Market Weighton and North Cave 01430 (+441430) 19. Marlborough 01672 (+441672) 20. Martin 01526 (+441526) 21. Martinstown (Northern Ireland) 02821 (+442821) 22. Matlock 01629 (+441629) 23. Maud 01771 (+441771) 24. Maybole 01655 (+441655) 25. Medway 01634 (+441634) 26. Melton Mowbray 01664 (+441664) 27. Meriden 01676 (+441676) 28. Merthyr Tydfil 01685 (+441685) 29. Mid Yell 01957 (+441957) 30. Middlesbrough 01642 (+441642) 31. Milford Haven 01646 (+441646) 32. Milton Keynes 01908 (+441908) 33. Minehead 01643 (+441643) 34. Moffat 01683 (+441683) 35. Mold 01352 (+441352) 36. Monmouth 01600 (+441600) 37. Montrose 01674 (+441674) 38. Moretonhampstead 01647 (+441647) 39. Morpeth 01670 (+441670) 40. Moscow 01560 (+441560) 41. Motherwell 01698 (+441698)