Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 1 Jan 2001 | Slough | 1 | 1 | Slight |
| Thu 4 Jan 2001 | Three Rivers | 2 | 1 | Slight |
| Thu 4 Jan 2001 | Watford | 1 | 1 | Serious |
| Fri 5 Jan 2001 | Watford | 1 | 1 | Slight |
| Mon 8 Jan 2001 | Watford | 2 | 1 | Slight |
| Tue 9 Jan 2001 | Watford | 2 | 1 | Slight |
| Tue 9 Jan 2001 | Watford | 2 | 1 | Slight |
| Tue 9 Jan 2001 | Slough | 1 | 1 | Slight |
| Wed 10 Jan 2001 | South Bucks | 1 | 1 | Slight |
| Wed 10 Jan 2001 | Watford | 1 | 1 | Slight |
| Fri 12 Jan 2001 | Watford | 1 | 1 | Serious |
| Fri 12 Jan 2001 | Watford | 2 | 1 | Serious |
| Sat 13 Jan 2001 | Three Rivers | 3 | 2 | Slight |
| Mon 15 Jan 2001 | South Bucks | 1 | 1 | Slight |
| Wed 17 Jan 2001 | South Bucks | 2 | 1 | Slight |
| Sun 21 Jan 2001 | Slough | 2 | 1 | Slight |
| Wed 24 Jan 2001 | South Bucks | 2 | 2 | Slight |
| Fri 26 Jan 2001 | South Bucks | 4 | 1 | Slight |
| Fri 26 Jan 2001 | Watford | 3 | 1 | Slight |
| Tue 30 Jan 2001 | South Bucks | 2 | 1 | Slight |
| Tue 30 Jan 2001 | Slough | 2 | 1 | Slight |
| Wed 31 Jan 2001 | Three Rivers | 2 | 2 | Slight |
| Thu 1 Feb 2001 | Slough | 2 | 2 | Slight |
| Fri 2 Feb 2001 | Three Rivers | 2 | 1 | Slight |
| Fri 2 Feb 2001 | Three Rivers | 2 | 1 | Slight |
| Sat 3 Feb 2001 | Watford | 3 | 3 | Slight |
| Tue 6 Feb 2001 | Three Rivers | 3 | 1 | Slight |
| Wed 7 Feb 2001 | Three Rivers | 2 | 1 | Slight |
| Wed 7 Feb 2001 | Watford | 1 | 1 | Slight |
| Wed 7 Feb 2001 | Watford | 1 | 1 | Slight |
| Tue 13 Feb 2001 | Watford | 1 | 1 | Slight |
| Wed 14 Feb 2001 | Watford | 2 | 3 | Slight |
| Fri 16 Feb 2001 | South Bucks | 2 | 1 | Slight |
| Fri 16 Feb 2001 | Three Rivers | 3 | 2 | Serious |
| Sat 17 Feb 2001 | Three Rivers | 1 | 1 | Slight |
| Sat 17 Feb 2001 | Three Rivers | 1 | 1 | Slight |
| Tue 27 Feb 2001 | Three Rivers | 1 | 2 | Slight |
| Thu 1 Mar 2001 | South Bucks | 1 | 1 | Serious |
| Tue 6 Mar 2001 | Watford | 2 | 1 | Slight |
| Tue 6 Mar 2001 | Three Rivers | 2 | 1 | Slight |
| Fri 9 Mar 2001 | Three Rivers | 3 | 4 | Slight |
| Mon 12 Mar 2001 | Watford | 2 | 1 | Slight |
| Fri 16 Mar 2001 | Watford | 2 | 1 | Slight |
| Fri 16 Mar 2001 | Watford | 2 | 1 | Serious |
| Sat 17 Mar 2001 | South Bucks | 1 | 1 | Serious |
| Tue 20 Mar 2001 | Three Rivers | 2 | 1 | Slight |
| Wed 21 Mar 2001 | Three Rivers | 2 | 1 | Slight |
| Mon 26 Mar 2001 | Watford | 2 | 1 | Slight |
| Tue 27 Mar 2001 | Three Rivers | 2 | 1 | Slight |
| Thu 29 Mar 2001 | South Bucks | 2 | 1 | Slight |
| Sun 1 Apr 2001 | Slough | 2 | 2 | Slight |
| Sat 7 Apr 2001 | Watford | 2 | 1 | Slight |
| Sat 7 Apr 2001 | Three Rivers | 2 | 3 | Slight |
| Tue 10 Apr 2001 | South Bucks | 1 | 1 | Slight |
| Thu 12 Apr 2001 | Three Rivers | 3 | 1 | Slight |
| Fri 13 Apr 2001 | Three Rivers | 2 | 1 | Slight |
| Sun 15 Apr 2001 | Slough | 1 | 1 | Slight |
| Mon 16 Apr 2001 | Slough | 2 | 1 | Slight |
| Tue 17 Apr 2001 | Watford | 2 | 1 | Slight |
| Sun 22 Apr 2001 | Three Rivers | 2 | 2 | Slight |
| Sun 22 Apr 2001 | Slough | 2 | 1 | Slight |
| Tue 24 Apr 2001 | Slough | 2 | 1 | Slight |
| Tue 24 Apr 2001 | Three Rivers | 3 | 1 | Slight |
| Wed 25 Apr 2001 | Three Rivers | 2 | 1 | Slight |
| Sat 28 Apr 2001 | Watford | 1 | 1 | Serious |
| Fri 4 May 2001 | Three Rivers | 3 | 3 | Slight |
| Tue 8 May 2001 | South Bucks | 3 | 1 | Slight |
| Sun 13 May 2001 | Watford | 4 | 1 | Serious |
| Sun 13 May 2001 | Watford | 2 | 2 | Serious |
| Mon 14 May 2001 | Watford | 3 | 2 | Slight |
| Fri 18 May 2001 | Three Rivers | 2 | 2 | Slight |
| Sat 19 May 2001 | Watford | 2 | 2 | Serious |
| Mon 21 May 2001 | Watford | 2 | 1 | Slight |
| Tue 22 May 2001 | Watford | 3 | 2 | Slight |
| Fri 25 May 2001 | Watford | 2 | 1 | Slight |
| Tue 29 May 2001 | South Bucks | 3 | 3 | Serious |
| Sun 3 Jun 2001 | South Bucks | 2 | 1 | Slight |
| Mon 4 Jun 2001 | Watford | 2 | 1 | Slight |
| Wed 6 Jun 2001 | Watford | 2 | 1 | Slight |
| Fri 8 Jun 2001 | Watford | 1 | 1 | Fatal |
| Thu 14 Jun 2001 | Watford | 2 | 2 | Slight |
| Thu 14 Jun 2001 | Three Rivers | 3 | 1 | Slight |
| Thu 14 Jun 2001 | Three Rivers | 1 | 1 | Serious |
| Fri 15 Jun 2001 | Three Rivers | 2 | 1 | Slight |
| Fri 15 Jun 2001 | Three Rivers | 2 | 1 | Slight |
| Mon 18 Jun 2001 | Watford | 2 | 1 | Slight |
| Tue 19 Jun 2001 | Watford | 2 | 1 | Slight |
| Tue 19 Jun 2001 | Slough | 2 | 1 | Serious |
| Tue 19 Jun 2001 | Three Rivers | 2 | 1 | Slight |
| Wed 27 Jun 2001 | Three Rivers | 3 | 3 | Slight |
| Sat 30 Jun 2001 | Watford | 2 | 1 | Slight |
| Wed 4 Jul 2001 | Watford | 3 | 1 | Slight |
| Thu 5 Jul 2001 | Watford | 3 | 1 | Slight |
| Sat 7 Jul 2001 | Watford | 1 | 1 | Slight |
| Sat 7 Jul 2001 | Three Rivers | 1 | 1 | Serious |
| Sun 8 Jul 2001 | Slough | 2 | 3 | Slight |
| Tue 10 Jul 2001 | Three Rivers | 3 | 2 | Slight |
| Tue 10 Jul 2001 | Three Rivers | 2 | 2 | Slight |
| Wed 11 Jul 2001 | South Bucks | 2 | 3 | Slight |
| Fri 13 Jul 2001 | South Bucks | 2 | 1 | Slight |
| Mon 16 Jul 2001 | Three Rivers | 3 | 3 | Serious |
| Tue 17 Jul 2001 | Three Rivers | 2 | 1 | Slight |
| Tue 17 Jul 2001 | Watford | 3 | 1 | Slight |
| Fri 20 Jul 2001 | Three Rivers | 1 | 1 | Slight |
| Fri 20 Jul 2001 | Three Rivers | 2 | 1 | Slight |
| Fri 20 Jul 2001 | Three Rivers | 2 | 1 | Slight |
| Fri 20 Jul 2001 | Watford | 2 | 1 | Slight |
| Tue 24 Jul 2001 | Watford | 2 | 1 | Slight |
| Tue 24 Jul 2001 | Watford | 2 | 1 | Slight |
| Tue 24 Jul 2001 | Three Rivers | 1 | 1 | Slight |
| Tue 24 Jul 2001 | Three Rivers | 3 | 3 | Slight |
| Sat 28 Jul 2001 | Watford | 2 | 1 | Slight |
| Mon 30 Jul 2001 | South Bucks | 2 | 1 | Slight |
| Tue 31 Jul 2001 | Watford | 2 | 2 | Slight |
| Fri 3 Aug 2001 | Three Rivers | 2 | 1 | Slight |
| Fri 3 Aug 2001 | Three Rivers | 1 | 2 | Serious |
| Sat 4 Aug 2001 | Watford | 1 | 1 | Serious |
| Thu 9 Aug 2001 | Three Rivers | 2 | 1 | Slight |
| Wed 15 Aug 2001 | Watford | 2 | 1 | Slight |
| Thu 16 Aug 2001 | Watford | 2 | 2 | Serious |
| Fri 17 Aug 2001 | Three Rivers | 1 | 2 | Slight |
| Mon 20 Aug 2001 | Watford | 2 | 1 | Slight |
| Tue 28 Aug 2001 | Three Rivers | 2 | 1 | Slight |
| Tue 28 Aug 2001 | South Bucks | 2 | 3 | Slight |
| Wed 29 Aug 2001 | South Bucks | 1 | 1 | Slight |
| Fri 31 Aug 2001 | Watford | 2 | 1 | Slight |
| Fri 31 Aug 2001 | Three Rivers | 2 | 1 | Slight |
| Fri 31 Aug 2001 | Watford | 2 | 1 | Slight |
| Fri 7 Sep 2001 | Three Rivers | 2 | 1 | Slight |
| Fri 7 Sep 2001 | Three Rivers | 2 | 1 | Slight |
| Sat 8 Sep 2001 | Watford | 2 | 2 | Slight |
| Fri 14 Sep 2001 | Slough | 2 | 1 | Slight |
| Tue 18 Sep 2001 | Three Rivers | 1 | 1 | Slight |
| Tue 18 Sep 2001 | Watford | 2 | 1 | Slight |
| Wed 19 Sep 2001 | Watford | 2 | 1 | Slight |
| Thu 20 Sep 2001 | South Bucks | 2 | 1 | Slight |
| Wed 26 Sep 2001 | Watford | 2 | 2 | Slight |
| Thu 27 Sep 2001 | Watford | 4 | 1 | Slight |
| Mon 1 Oct 2001 | Watford | 2 | 1 | Slight |
| Thu 4 Oct 2001 | South Bucks | 2 | 1 | Serious |
| Fri 5 Oct 2001 | Three Rivers | 2 | 1 | Slight |
| Fri 5 Oct 2001 | Three Rivers | 2 | 1 | Slight |
| Mon 8 Oct 2001 | Watford | 4 | 3 | Slight |
| Wed 10 Oct 2001 | Slough | 2 | 1 | Slight |
| Thu 11 Oct 2001 | South Bucks | 1 | 1 | Slight |
| Mon 15 Oct 2001 | Watford | 2 | 1 | Slight |
| Mon 15 Oct 2001 | Watford | 2 | 1 | Slight |
| Tue 16 Oct 2001 | South Bucks | 3 | 1 | Serious |
| Thu 18 Oct 2001 | Watford | 4 | 3 | Slight |
| Thu 18 Oct 2001 | Three Rivers | 3 | 3 | Slight |
| Fri 19 Oct 2001 | Three Rivers | 2 | 1 | Slight |
| Tue 23 Oct 2001 | Slough | 2 | 1 | Slight |
| Tue 23 Oct 2001 | Watford | 2 | 2 | Slight |
| Tue 23 Oct 2001 | Three Rivers | 2 | 1 | Slight |
| Thu 25 Oct 2001 | South Bucks | 2 | 2 | Slight |
| Fri 26 Oct 2001 | Watford | 1 | 1 | Slight |
| Sun 4 Nov 2001 | Watford | 1 | 2 | Serious |
| Wed 7 Nov 2001 | Watford | 2 | 1 | Slight |
| Wed 7 Nov 2001 | South Bucks | 1 | 2 | Serious |
| Thu 8 Nov 2001 | Three Rivers | 3 | 1 | Slight |
| Thu 8 Nov 2001 | Slough | 3 | 1 | Slight |
| Fri 9 Nov 2001 | Watford | 2 | 1 | Serious |
| Mon 12 Nov 2001 | South Bucks | 2 | 1 | Slight |
| Tue 13 Nov 2001 | Slough | 2 | 1 | Slight |
| Mon 19 Nov 2001 | Watford | 1 | 1 | Slight |
| Wed 21 Nov 2001 | Watford | 2 | 1 | Slight |
| Fri 23 Nov 2001 | Watford | 1 | 1 | Slight |
| Sun 25 Nov 2001 | Three Rivers | 2 | 3 | Serious |
| Sun 25 Nov 2001 | South Bucks | 2 | 1 | Slight |
| Mon 26 Nov 2001 | Slough | 3 | 2 | Slight |
| Mon 26 Nov 2001 | Watford | 4 | 1 | Slight |
| Mon 26 Nov 2001 | Watford | 2 | 1 | Serious |
| Wed 28 Nov 2001 | South Bucks | 2 | 1 | Slight |
| Mon 3 Dec 2001 | Three Rivers | 1 | 1 | Slight |
| Wed 5 Dec 2001 | Three Rivers | 2 | 1 | Slight |
| Sat 8 Dec 2001 | Three Rivers | 1 | 1 | Slight |
| Mon 10 Dec 2001 | Three Rivers | 2 | 1 | Slight |
| Tue 11 Dec 2001 | South Bucks | 5 | 4 | Slight |
| Tue 11 Dec 2001 | Watford | 2 | 1 | Slight |
| Fri 14 Dec 2001 | Watford | 1 | 1 | Slight |
| Sun 16 Dec 2001 | Watford | 3 | 6 | Slight |
| Mon 17 Dec 2001 | Slough | 2 | 1 | Slight |
| Thu 20 Dec 2001 | Three Rivers | 3 | 1 | Slight |
| Fri 21 Dec 2001 | Watford | 2 | 1 | Slight |
| Sat 22 Dec 2001 | Three Rivers | 1 | 1 | Serious |
| Sun 30 Dec 2001 | Slough | 2 | 2 | Slight |
| Mon 31 Dec 2001 | Three Rivers | 1 | 1 | Slight |
| Mon 31 Dec 2001 | Three Rivers | 1 | 1 | Slight |