Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 4 Jan 1991 | Hillingdon | 2 | 2 | Serious |
| Fri 11 Jan 1991 | Hillingdon | 2 | 4 | Serious |
| Sat 19 Jan 1991 | Hillingdon | 2 | 1 | Serious |
| Tue 22 Jan 1991 | Hillingdon | 2 | 1 | Slight |
| Fri 15 Feb 1991 | Hillingdon | 1 | 1 | Slight |
| Tue 19 Feb 1991 | Hillingdon | 2 | 1 | Slight |
| Wed 27 Feb 1991 | Hillingdon | 2 | 1 | Slight |
| Tue 5 Mar 1991 | Hillingdon | 1 | 1 | Serious |
| Mon 18 Mar 1991 | Hillingdon | 2 | 1 | Slight |
| Tue 19 Mar 1991 | Hillingdon | 2 | 1 | Slight |
| Mon 25 Mar 1991 | Hillingdon | 2 | 1 | Slight |
| Tue 2 Apr 1991 | Hillingdon | 1 | 1 | Serious |
| Mon 15 Apr 1991 | Hillingdon | 1 | 2 | Slight |
| Thu 18 Apr 1991 | Hillingdon | 2 | 1 | Slight |
| Thu 18 Apr 1991 | Hillingdon | 3 | 3 | Slight |
| Thu 18 Apr 1991 | Hillingdon | 2 | 1 | Slight |
| Mon 29 Apr 1991 | Hillingdon | 2 | 1 | Slight |
| Wed 1 May 1991 | Hillingdon | 2 | 1 | Slight |
| Thu 9 May 1991 | Hillingdon | 3 | 1 | Slight |
| Tue 14 May 1991 | Hillingdon | 2 | 1 | Slight |
| Wed 15 May 1991 | Hillingdon | 2 | 1 | Slight |
| Sat 18 May 1991 | Hillingdon | 2 | 2 | Serious |
| Sat 18 May 1991 | Hillingdon | 2 | 1 | Slight |
| Sun 19 May 1991 | Hillingdon | 2 | 2 | Slight |
| Sat 25 May 1991 | Hillingdon | 2 | 1 | Slight |
| Thu 30 May 1991 | Hillingdon | 2 | 1 | Slight |
| Thu 30 May 1991 | Hillingdon | 2 | 1 | Slight |
| Wed 5 Jun 1991 | Hillingdon | 4 | 1 | Serious |
| Wed 5 Jun 1991 | Hillingdon | 3 | 1 | Slight |
| Wed 19 Jun 1991 | Hillingdon | 2 | 1 | Slight |
| Wed 19 Jun 1991 | Hillingdon | 2 | 1 | Slight |
| Mon 1 Jul 1991 | Hillingdon | 1 | 1 | Serious |
| Sat 6 Jul 1991 | Hillingdon | 2 | 1 | Slight |
| Wed 10 Jul 1991 | Hillingdon | 4 | 1 | Slight |
| Sat 20 Jul 1991 | Hillingdon | 2 | 2 | Slight |
| Tue 23 Jul 1991 | Hillingdon | 2 | 1 | Slight |
| Mon 29 Jul 1991 | Hillingdon | 2 | 1 | Slight |
| Thu 1 Aug 1991 | Hillingdon | 2 | 1 | Slight |
| Sun 4 Aug 1991 | Hillingdon | 2 | 2 | Slight |
| Mon 5 Aug 1991 | Hillingdon | 2 | 1 | Slight |
| Wed 7 Aug 1991 | Hillingdon | 3 | 1 | Slight |
| Fri 9 Aug 1991 | Hillingdon | 1 | 1 | Slight |
| Sat 10 Aug 1991 | Hillingdon | 2 | 1 | Slight |
| Mon 12 Aug 1991 | Hillingdon | 2 | 1 | Slight |
| Thu 15 Aug 1991 | Hillingdon | 2 | 2 | Serious |
| Thu 22 Aug 1991 | Hillingdon | 1 | 1 | Slight |
| Sun 25 Aug 1991 | Hillingdon | 1 | 1 | Slight |
| Mon 2 Sep 1991 | Hillingdon | 2 | 1 | Slight |
| Mon 9 Sep 1991 | Hillingdon | 3 | 1 | Slight |
| Fri 20 Sep 1991 | Hillingdon | 2 | 1 | Slight |
| Fri 20 Sep 1991 | Hillingdon | 2 | 1 | Slight |
| Wed 25 Sep 1991 | Hillingdon | 2 | 1 | Slight |
| Wed 25 Sep 1991 | Hillingdon | 2 | 1 | Serious |
| Fri 18 Oct 1991 | Hillingdon | 1 | 1 | Serious |
| Sat 19 Oct 1991 | Hillingdon | 2 | 1 | Serious |
| Sun 3 Nov 1991 | Hillingdon | 1 | 2 | Serious |
| Mon 4 Nov 1991 | Hillingdon | 1 | 1 | Slight |
| Fri 8 Nov 1991 | Hillingdon | 1 | 1 | Slight |
| Mon 18 Nov 1991 | Hillingdon | 2 | 1 | Slight |
| Mon 18 Nov 1991 | Hillingdon | 2 | 1 | Slight |
| Wed 20 Nov 1991 | Hillingdon | 1 | 1 | Fatal |
| Fri 22 Nov 1991 | Hillingdon | 2 | 1 | Slight |
| Fri 22 Nov 1991 | Hillingdon | 2 | 2 | Slight |
| Mon 25 Nov 1991 | Hillingdon | 2 | 1 | Slight |
| Sun 1 Dec 1991 | Hillingdon | 2 | 2 | Serious |
| Tue 3 Dec 1991 | Hillingdon | 2 | 2 | Slight |
| Mon 9 Dec 1991 | Hillingdon | 2 | 1 | Slight |
| Tue 24 Dec 1991 | Hillingdon | 1 | 1 | Serious |