Well, some of the passenger trains have the reasons
1D32 - problem with the track (IS)
1V66 - due to the request of the police (VG)
1D91 - points failure (IB)
1D93 - signalling systems failure (IF)
1D21 Shewsbury-Holyhead has just left Flint 79 late after sitting in the station for 45 minutes. The same happened to the previous service (1W96 from Cardiff) as well.
1D31 - the one that's 3+ hours late - looks like it might have reversed back to Flint (or Holywell Junction?) at some point, unless RTT's timing are completely out of whack.
Some wrong line running occurring possibly?