Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sat 3 Jan 2004 | The Vale of Glamorgan | 3 | 1 | Slight |
| Fri 20 Feb 2004 | The Vale of Glamorgan | 2 | 1 | Slight |
| Mon 1 Mar 2004 | The Vale of Glamorgan | 2 | 1 | Slight |
| Mon 15 Mar 2004 | The Vale of Glamorgan | 2 | 2 | Serious |
| Tue 20 Apr 2004 | The Vale of Glamorgan | 2 | 1 | Serious |
| Wed 5 May 2004 | The Vale of Glamorgan | 1 | 3 | Slight |
| Tue 11 May 2004 | The Vale of Glamorgan | 2 | 1 | Slight |
| Wed 2 Jun 2004 | The Vale of Glamorgan | 2 | 1 | Slight |
| Thu 22 Jul 2004 | The Vale of Glamorgan | 2 | 1 | Slight |
| Mon 6 Sep 2004 | The Vale of Glamorgan | 2 | 4 | Slight |
| Fri 19 Nov 2004 | The Vale of Glamorgan | 1 | 1 | Serious |
| Sat 11 Dec 2004 | The Vale of Glamorgan | 1 | 1 | Slight |
| Fri 17 Dec 2004 | The Vale of Glamorgan | 2 | 1 | Slight |
| Tue 28 Dec 2004 | The Vale of Glamorgan | 1 | 2 | Slight |