| Reason | Count | |
|---|---|---|
| Shortage of train crew | 145 | |
| More trains than usual needing repairs | 72 | |
| Shortage of train drivers | 67 | |
| Fault on this train | 21 | |
| Severe weather | 20 | |
| Fault with the signalling system | 16 | |
| Broken down train | 13 | |
| Points failure | 12 | |
| Emergency services dealing with an incident | 9 | |
| Train crew delayed by service disruption | 7 |