Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 12 Jan 2004 | Welwyn Hatfield | 3 | 1 | Slight |
| Mon 19 Jan 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 20 Jan 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 20 Jan 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 3 Feb 2004 | Welwyn Hatfield | 3 | 3 | Slight |
| Mon 16 Feb 2004 | Welwyn Hatfield | 2 | 3 | Slight |
| Fri 26 Mar 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 5 Apr 2004 | Welwyn Hatfield | 3 | 4 | Slight |
| Sat 10 Apr 2004 | Welwyn Hatfield | 2 | 3 | Slight |
| Mon 12 Apr 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 4 May 2004 | Welwyn Hatfield | 2 | 2 | Slight |
| Wed 19 May 2004 | Welwyn Hatfield | 2 | 3 | Slight |
| Thu 20 May 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 20 May 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 22 May 2004 | Welwyn Hatfield | 2 | 4 | Slight |
| Mon 31 May 2004 | Welwyn Hatfield | 2 | 1 | Serious |
| Tue 1 Jun 2004 | Welwyn Hatfield | 3 | 3 | Slight |
| Thu 3 Jun 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 3 Jun 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 11 Jun 2004 | Welwyn Hatfield | 1 | 1 | Slight |
| Fri 11 Jun 2004 | Welwyn Hatfield | 1 | 1 | Slight |
| Fri 25 Jun 2004 | Welwyn Hatfield | 2 | 2 | Slight |
| Mon 28 Jun 2004 | Welwyn Hatfield | 3 | 1 | Slight |
| Tue 29 Jun 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 8 Jul 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 11 Jul 2004 | Welwyn Hatfield | 3 | 2 | Slight |
| Fri 30 Jul 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 1 Aug 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 2 Aug 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 2 Aug 2004 | Welwyn Hatfield | 2 | 2 | Slight |
| Thu 5 Aug 2004 | Welwyn Hatfield | 3 | 1 | Slight |
| Thu 12 Aug 2004 | Welwyn Hatfield | 2 | 1 | Serious |
| Wed 1 Sep 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 4 Sep 2004 | Welwyn Hatfield | 2 | 3 | Serious |
| Sat 4 Sep 2004 | Welwyn Hatfield | 2 | 3 | Serious |
| Tue 21 Sep 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 21 Sep 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 24 Sep 2004 | Welwyn Hatfield | 2 | 1 | Serious |
| Mon 27 Sep 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 5 Oct 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 12 Oct 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 27 Oct 2004 | Welwyn Hatfield | 2 | 2 | Serious |
| Wed 27 Oct 2004 | Welwyn Hatfield | 2 | 2 | Serious |
| Thu 28 Oct 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 30 Oct 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 5 Nov 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 5 Nov 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 9 Nov 2004 | Welwyn Hatfield | 2 | 1 | Serious |
| Thu 25 Nov 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 25 Nov 2004 | Welwyn Hatfield | 3 | 2 | Slight |
| Mon 29 Nov 2004 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 29 Nov 2004 | Welwyn Hatfield | 3 | 1 | Slight |
| Tue 28 Dec 2004 | Welwyn Hatfield | 2 | 1 | Slight |