Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sat 12 Jan 1991 | Harrow | 2 | 1 | Slight |
| Sat 12 Jan 1991 | Harrow | 2 | 1 | Slight |
| Mon 14 Jan 1991 | Brent | 2 | 1 | Slight |
| Sat 19 Jan 1991 | Harrow | 2 | 1 | Serious |
| Sat 19 Jan 1991 | Harrow | 2 | 1 | Serious |
| Mon 21 Jan 1991 | Harrow | 2 | 1 | Slight |
| Tue 29 Jan 1991 | Harrow | 2 | 1 | Slight |
| Wed 30 Jan 1991 | Harrow | 3 | 1 | Slight |
| Mon 25 Feb 1991 | Brent | 1 | 1 | Serious |
| Tue 26 Feb 1991 | Brent | 2 | 1 | Slight |
| Sun 3 Mar 1991 | Harrow | 2 | 2 | Slight |
| Tue 5 Mar 1991 | Harrow | 2 | 1 | Slight |
| Fri 8 Mar 1991 | Hertsmere | 2 | 1 | Slight |
| Wed 13 Mar 1991 | Brent | 2 | 2 | Serious |
| Sat 23 Mar 1991 | Harrow | 2 | 1 | Slight |
| Wed 27 Mar 1991 | Harrow | 1 | 1 | Slight |
| Thu 28 Mar 1991 | Harrow | 2 | 1 | Slight |
| Sat 6 Apr 1991 | Harrow | 1 | 1 | Slight |
| Mon 8 Apr 1991 | Harrow | 1 | 1 | Slight |
| Thu 11 Apr 1991 | Brent | 2 | 2 | Slight |
| Sun 14 Apr 1991 | Harrow | 3 | 1 | Slight |
| Fri 19 Apr 1991 | Harrow | 1 | 1 | Serious |
| Mon 22 Apr 1991 | Brent | 3 | 1 | Slight |
| Tue 23 Apr 1991 | Harrow | 2 | 1 | Slight |
| Mon 29 Apr 1991 | Brent | 1 | 1 | Slight |
| Fri 3 May 1991 | Harrow | 2 | 2 | Serious |
| Thu 16 May 1991 | Harrow | 2 | 1 | Serious |
| Fri 17 May 1991 | Harrow | 2 | 1 | Serious |
| Sat 18 May 1991 | Harrow | 2 | 1 | Slight |
| Sun 19 May 1991 | Harrow | 2 | 1 | Slight |
| Wed 22 May 1991 | Harrow | 2 | 1 | Slight |
| Wed 29 May 1991 | Harrow | 2 | 1 | Slight |
| Wed 29 May 1991 | Harrow | 2 | 1 | Slight |
| Wed 5 Jun 1991 | Brent | 2 | 1 | Slight |
| Thu 6 Jun 1991 | Harrow | 2 | 1 | Slight |
| Fri 7 Jun 1991 | Harrow | 1 | 2 | Serious |
| Wed 12 Jun 1991 | Hertsmere | 2 | 1 | Serious |
| Thu 13 Jun 1991 | Harrow | 2 | 2 | Slight |
| Fri 28 Jun 1991 | Brent | 1 | 1 | Slight |
| Sat 29 Jun 1991 | Harrow | 2 | 1 | Serious |
| Fri 5 Jul 1991 | Harrow | 2 | 1 | Slight |
| Wed 10 Jul 1991 | Harrow | 2 | 1 | Slight |
| Fri 12 Jul 1991 | Harrow | 2 | 1 | Slight |
| Fri 12 Jul 1991 | Harrow | 2 | 1 | Slight |
| Tue 16 Jul 1991 | Harrow | 1 | 1 | Fatal |
| Wed 17 Jul 1991 | Harrow | 2 | 1 | Slight |
| Sat 20 Jul 1991 | Harrow | 1 | 1 | Serious |
| Sat 27 Jul 1991 | Brent | 4 | 1 | Serious |
| Wed 7 Aug 1991 | Brent | 2 | 1 | Slight |
| Wed 7 Aug 1991 | Harrow | 2 | 1 | Slight |
| Sat 10 Aug 1991 | Harrow | 2 | 2 | Slight |
| Wed 14 Aug 1991 | Harrow | 1 | 1 | Slight |
| Sun 18 Aug 1991 | Brent | 3 | 1 | Serious |
| Tue 20 Aug 1991 | Brent | 2 | 1 | Slight |
| Tue 20 Aug 1991 | Brent | 2 | 1 | Slight |
| Fri 23 Aug 1991 | Brent | 2 | 1 | Slight |
| Sat 24 Aug 1991 | Harrow | 2 | 1 | Slight |
| Mon 26 Aug 1991 | Brent | 2 | 1 | Slight |
| Sat 31 Aug 1991 | Harrow | 2 | 1 | Slight |
| Tue 3 Sep 1991 | Harrow | 3 | 1 | Slight |
| Fri 6 Sep 1991 | Brent | 2 | 1 | Slight |
| Fri 13 Sep 1991 | Harrow | 2 | 2 | Slight |
| Fri 13 Sep 1991 | Harrow | 1 | 1 | Fatal |
| Fri 13 Sep 1991 | Harrow | 1 | 1 | Slight |
| Sat 14 Sep 1991 | Brent | 2 | 1 | Slight |
| Sat 14 Sep 1991 | Brent | 2 | 1 | Slight |
| Tue 17 Sep 1991 | Harrow | 2 | 1 | Slight |
| Fri 20 Sep 1991 | Harrow | 1 | 1 | Slight |
| Fri 20 Sep 1991 | Harrow | 1 | 3 | Slight |
| Sat 21 Sep 1991 | Harrow | 2 | 3 | Slight |
| Sun 22 Sep 1991 | Brent | 2 | 2 | Slight |
| Sat 28 Sep 1991 | Brent | 2 | 1 | Slight |
| Thu 3 Oct 1991 | Harrow | 1 | 1 | Slight |
| Sun 6 Oct 1991 | Harrow | 2 | 2 | Slight |
| Thu 10 Oct 1991 | Harrow | 2 | 1 | Slight |
| Sat 12 Oct 1991 | Harrow | 2 | 1 | Slight |
| Sat 12 Oct 1991 | Harrow | 2 | 1 | Slight |
| Sat 19 Oct 1991 | Harrow | 2 | 2 | Slight |
| Tue 22 Oct 1991 | Hertsmere | 2 | 1 | Slight |
| Wed 23 Oct 1991 | Brent | 2 | 1 | Slight |
| Fri 25 Oct 1991 | Hertsmere | 2 | 1 | Slight |
| Sun 27 Oct 1991 | Hertsmere | 2 | 1 | Slight |
| Mon 28 Oct 1991 | Harrow | 2 | 1 | Serious |
| Thu 31 Oct 1991 | Harrow | 1 | 1 | Slight |
| Mon 4 Nov 1991 | Brent | 3 | 2 | Slight |
| Tue 5 Nov 1991 | Brent | 1 | 1 | Slight |
| Fri 8 Nov 1991 | Harrow | 2 | 1 | Slight |
| Wed 13 Nov 1991 | Brent | 2 | 1 | Slight |
| Thu 21 Nov 1991 | Harrow | 2 | 1 | Slight |
| Thu 21 Nov 1991 | Hertsmere | 1 | 1 | Slight |
| Mon 25 Nov 1991 | Brent | 2 | 2 | Serious |
| Sat 30 Nov 1991 | Harrow | 2 | 1 | Slight |
| Mon 2 Dec 1991 | Harrow | 2 | 1 | Slight |
| Tue 3 Dec 1991 | Brent | 1 | 1 | Slight |
| Thu 5 Dec 1991 | Harrow | 2 | 2 | Slight |
| Thu 5 Dec 1991 | Harrow | 2 | 1 | Slight |
| Thu 5 Dec 1991 | Brent | 1 | 1 | Slight |
| Fri 6 Dec 1991 | Harrow | 1 | 1 | Fatal |
| Wed 11 Dec 1991 | Harrow | 2 | 1 | Slight |
| Wed 11 Dec 1991 | Harrow | 2 | 1 | Slight |
| Fri 13 Dec 1991 | Harrow | 3 | 1 | Slight |
| Sat 14 Dec 1991 | Harrow | 2 | 1 | Slight |
| Mon 23 Dec 1991 | Harrow | 1 | 2 | Slight |
| Sat 28 Dec 1991 | Harrow | 2 | 2 | Slight |