49. The M49. 0 likes.
48. The M898. 1 like.
47. The M181. 1 like.
46. The M876. 2 likes.
45. The M73. 2 likes.
44. The M602. 3 likes.
43. The M9. 3 likes.
42. The M90. 4 likes.
41. The M621. 5 likes.
40. The M275. 5 likes.
39. The M2. 6 likes.
38. The M54. 7 likes.
37. The M57. 8 likes.
36. The M271. 9 likes.
35. The M50. 10 likes.
34. The M53. 11 likes.
33. The M32. 11 likes.
32. The M180. 12 likes.
31. The M48. 14 likes.
30. The M77. 15 likes.
29. The M58. 15 likes.
28. The M55. 15 likes.
27. The M67. 17 likes.
26. The M45. 17 likes.
25. The M26. 20 likes.
24. The M65. 23 likes.
23. The M74. 25 likes.
22. The M8. 25 likes.
21. The M20. 27 likes.
20. The M69. 41 likes.
19. The M66. 41 likes.
18. The M23. 41 likes.
17. The M18. 41 likes.
16. The M42. 42 likes.
15. The M56. 47 likes.
14. The M40. 47 likes.
13. The M3. 62 likes.
12. The M606. 75 likes.
11. The M80. 82 likes.
10. The M11. 85 likes.
9. The M6. 104 likes.
8. The M5. 105 likes.
7. The M60. 115 likes.
6. The M6 Toll Road. 134 likes.
5. The M27. 192 likes.
4. The M62. 236 likes.
3. The M1. 2,603 likes.
2. The M25. 4,289 likes.
1. The M4. 6,109 likes.
Notes:
Upgraded A roads have been excluded from this ranking, which only encompasses motorways with an M prefix.
Roads downgraded while retaining their M prefix have also been excluded.
When tied, the road with the lowest number in its name has been ranked higher.
Some roads with very popular individual features, such as the M62 summit, have high "like" numbers, but we have used only the number from the actual road.
Some roads have multiple pages. The page with most "likes" has been used, not a summation.
Additionally, some pages are listed as Landmarks, some as Main Roads, some as Wikipedia Topics, and some as actual fan pages. This inconsistency does not concern us.
The M6 Toll Road has been included separately due to the the intense emotions it encourages.
While the M48 has a very small Facebook page, the Severn Bridge, which forms a significant part of the road, has a much larger one. It has 1,334 likes, which if included would lift it to fourth place overall.
Controversially, the M74 has a combined Facebook page with the A74(M). We have elected to include it here despite this dispute.
All "like" volumes correct at the time of posting.