connector at M4 J4/M4 spur (Heathrow) | Eastbound | Congestion

Incident timeline

1. 19:02, 29 JunFirst report

   Location : The M4 eastbound exit slip at junction J4 .
   Reason : Congestion.
   Status : Currently Active.
   Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

2. 19:05, 29 JunUpdate

   Location : The M4 eastbound exit slip at junction J4 .
   Reason : Congestion.
   Status : Currently Active.
   Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

3. 19:35, 29 JunUpdate

   ⏱ Still active — no changes from National Highways. Incident ongoing for 33 minutes. Monitoring continues.

4. 19:40, 29 JunUpdate

   Location : The M4 eastbound exit slip at junction J4 .
   Reason : Congestion.
   Status : Currently Active.
   Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

5. 20:15, 29 JunUpdate

   ⏱ Still active — no changes from National Highways. Incident ongoing for 1h 13m. Monitoring continues.

6. 20:20, 29 JunUpdate

   Location : The M4 eastbound exit slip at junction J4 .
   Reason : Congestion.
   Status : Currently Active.
   Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

7. 20:50, 29 JunUpdate

   ⏱ Still active — no changes from National Highways. Incident ongoing for 1h 48m. Monitoring continues.

8. 20:55, 29 JunUpdate

   Location : The M4 eastbound exit slip at junction J4 .
   Reason : Congestion.
   Status : Currently Active.
   Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

9. 21:25, 29 JunUpdate

   ⏱ Still active — no changes from National Highways. Incident ongoing for 2h 23m. Monitoring continues.

10. 21:30, 29 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

11. 22:00, 29 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 2h 58m. Monitoring continues.

12. 22:05, 29 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

13. 22:35, 29 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 3h 33m. Monitoring continues.

14. 22:40, 29 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

15. 23:10, 29 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 4h 8m. Monitoring continues.

16. 23:15, 29 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

17. 23:45, 29 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 4h 43m. Monitoring continues.

18. 23:50, 29 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

19. 00:20, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 5h 18m. Monitoring continues.

20. 00:25, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

21. 00:55, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 5h 53m. Monitoring continues.

22. 01:00, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

23. 01:30, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 6h 28m. Monitoring continues.

24. 01:35, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

25. 02:05, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 7h 3m. Monitoring continues.

26. 02:10, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

27. 02:40, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 7h 38m. Monitoring continues.

28. 02:45, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

29. 03:20, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 8h 18m. Monitoring continues.

30. 03:25, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

31. 03:55, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 8h 53m. Monitoring continues.

32. 04:00, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

33. 04:30, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 9h 28m. Monitoring continues.

34. 04:35, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

35. 05:10, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 10h 8m. Monitoring continues.

36. 05:15, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

37. 05:45, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 10h 43m. Monitoring continues.

38. 05:50, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

39. 06:20, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 11h 18m. Monitoring continues.

40. 06:25, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

41. 06:55, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 11h 53m. Monitoring continues.

42. 07:00, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

43. 07:30, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 12h 28m. Monitoring continues.

44. 07:35, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

45. 08:05, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 13h 3m. Monitoring continues.

46. 08:10, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

47. 08:45, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 13h 43m. Monitoring continues.

48. 09:30, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

49. 10:00, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 14h 58m. Monitoring continues.

50. 10:05, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

51. 10:35, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 15h 33m. Monitoring continues.

52. 10:40, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

53. 11:10, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 16h 8m. Monitoring continues.

54. 11:15, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

55. 11:45, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 16h 43m. Monitoring continues.

56. 11:50, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

57. 12:25, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 17h 23m. Monitoring continues.

58. 12:30, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

59. 13:00, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 17h 58m. Monitoring continues.

60. 13:05, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

61. 13:40, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 18h 38m. Monitoring continues.

62. 13:45, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

63. 14:20, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 19h 18m. Monitoring continues.

64. 14:25, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

65. 14:55, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 19h 53m. Monitoring continues.

66. 15:00, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

67. 15:35, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 20h 33m. Monitoring continues.

68. 15:40, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

69. 16:10, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 21h 8m. Monitoring continues.

70. 16:15, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

71. 16:50, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 21h 48m. Monitoring continues.

72. 16:55, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

73. 17:30, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 22h 28m. Monitoring continues.

74. 17:35, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

75. 18:05, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 23h 3m. Monitoring continues.

76. 18:10, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

77. 18:45, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 23h 43m. Monitoring continues.

78. 18:50, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

79. 19:20, 30 JunUpdate

    ⏱ Still active — no changes from National Highways. Incident ongoing for 24h 18m. Monitoring continues.

80. 19:25, 30 JunUpdate

    Location : The M4 eastbound exit slip at junction J4 .
    Reason : Congestion.
    Status : Currently Active.
    Return To Normal : Normal traffic conditions are expected between 19:00 and 19:15 on 29 June 2026.

Wording from National Highways, recorded as it changed.

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