Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 5 Jan 1990 | Hillingdon | 1 | 1 | Slight |
| Fri 12 Jan 1990 | Hillingdon | 2 | 2 | Slight |
| Fri 12 Jan 1990 | Hillingdon | 2 | 2 | Slight |
| Fri 12 Jan 1990 | Hillingdon | 2 | 2 | Slight |
| Sun 14 Jan 1990 | Hillingdon | 1 | 1 | Slight |
| Mon 22 Jan 1990 | Hillingdon | 2 | 1 | Slight |
| Wed 24 Jan 1990 | Hillingdon | 2 | 1 | Slight |
| Wed 24 Jan 1990 | Hillingdon | 2 | 1 | Slight |
| Wed 24 Jan 1990 | Hillingdon | 2 | 1 | Slight |
| Wed 24 Jan 1990 | Hillingdon | 2 | 1 | Slight |
| Sat 27 Jan 1990 | Hillingdon | 2 | 1 | Slight |
| Tue 13 Feb 1990 | Hillingdon | 2 | 1 | Slight |
| Sat 17 Feb 1990 | Hillingdon | 2 | 1 | Slight |
| Thu 22 Feb 1990 | Hillingdon | 2 | 1 | Slight |
| Sat 24 Feb 1990 | Hillingdon | 1 | 1 | Slight |
| Sun 25 Feb 1990 | Hillingdon | 2 | 1 | Slight |
| Sun 25 Feb 1990 | Hillingdon | 2 | 1 | Slight |
| Wed 14 Mar 1990 | Hillingdon | 2 | 1 | Slight |
| Fri 16 Mar 1990 | Hillingdon | 2 | 1 | Slight |
| Fri 16 Mar 1990 | Hillingdon | 2 | 1 | Slight |
| Fri 23 Mar 1990 | Hillingdon | 2 | 2 | Slight |
| Sat 24 Mar 1990 | Hillingdon | 1 | 1 | Serious |
| Wed 28 Mar 1990 | Hillingdon | 2 | 1 | Slight |
| Tue 3 Apr 1990 | Hillingdon | 2 | 1 | Slight |
| Tue 3 Apr 1990 | Hillingdon | 2 | 1 | Slight |
| Fri 6 Apr 1990 | Hillingdon | 2 | 1 | Slight |
| Sat 7 Apr 1990 | Hillingdon | 2 | 1 | Slight |
| Sat 7 Apr 1990 | Hillingdon | 1 | 1 | Serious |
| Sun 8 Apr 1990 | Hillingdon | 2 | 1 | Slight |
| Sun 8 Apr 1990 | Hillingdon | 2 | 1 | Slight |
| Sun 15 Apr 1990 | Hillingdon | 2 | 4 | Slight |
| Sun 22 Apr 1990 | Hillingdon | 2 | 3 | Serious |
| Sun 22 Apr 1990 | Hillingdon | 2 | 3 | Serious |
| Thu 26 Apr 1990 | Hillingdon | 2 | 1 | Slight |
| Thu 26 Apr 1990 | Hillingdon | 2 | 1 | Slight |
| Thu 3 May 1990 | Hillingdon | 1 | 1 | Slight |
| Fri 4 May 1990 | Hillingdon | 1 | 1 | Slight |
| Sat 5 May 1990 | Hillingdon | 1 | 1 | Slight |
| Sat 12 May 1990 | Hillingdon | 2 | 3 | Serious |
| Sat 12 May 1990 | Hillingdon | 2 | 3 | Serious |
| Wed 23 May 1990 | Hillingdon | 2 | 1 | Slight |
| Tue 29 May 1990 | Hillingdon | 1 | 1 | Slight |
| Fri 1 Jun 1990 | Hillingdon | 2 | 1 | Slight |
| Mon 4 Jun 1990 | Hillingdon | 2 | 2 | Serious |
| Wed 6 Jun 1990 | Hillingdon | 3 | 1 | Slight |
| Wed 6 Jun 1990 | Hillingdon | 2 | 1 | Slight |
| Fri 8 Jun 1990 | Hillingdon | 4 | 1 | Slight |
| Wed 20 Jun 1990 | Hillingdon | 2 | 2 | Slight |
| Fri 22 Jun 1990 | Hillingdon | 1 | 1 | Slight |
| Fri 22 Jun 1990 | Hillingdon | 1 | 1 | Slight |
| Fri 22 Jun 1990 | Hillingdon | 2 | 1 | Slight |
| Mon 2 Jul 1990 | Hillingdon | 3 | 1 | Slight |
| Mon 2 Jul 1990 | Hillingdon | 3 | 1 | Slight |
| Sun 8 Jul 1990 | Hillingdon | 1 | 1 | Slight |
| Mon 9 Jul 1990 | Hillingdon | 2 | 1 | Slight |
| Tue 10 Jul 1990 | Hillingdon | 1 | 1 | Slight |
| Thu 12 Jul 1990 | Hillingdon | 1 | 1 | Slight |
| Tue 17 Jul 1990 | Hillingdon | 2 | 1 | Slight |
| Tue 17 Jul 1990 | Hillingdon | 3 | 2 | Slight |
| Sun 22 Jul 1990 | Hillingdon | 2 | 1 | Slight |
| Mon 23 Jul 1990 | Hillingdon | 2 | 1 | Slight |
| Mon 23 Jul 1990 | Hillingdon | 2 | 1 | Slight |
| Sat 28 Jul 1990 | Hillingdon | 2 | 1 | Slight |
| Mon 30 Jul 1990 | Hillingdon | 2 | 1 | Slight |
| Tue 31 Jul 1990 | Hillingdon | 2 | 1 | Slight |
| Fri 3 Aug 1990 | Hillingdon | 2 | 1 | Slight |
| Fri 3 Aug 1990 | Hillingdon | 2 | 1 | Slight |
| Fri 3 Aug 1990 | Hillingdon | 2 | 1 | Serious |
| Mon 6 Aug 1990 | Hillingdon | 1 | 1 | Slight |
| Thu 9 Aug 1990 | Hillingdon | 1 | 1 | Slight |
| Wed 15 Aug 1990 | Hillingdon | 2 | 2 | Slight |
| Wed 15 Aug 1990 | Hillingdon | 2 | 1 | Slight |
| Tue 28 Aug 1990 | Hillingdon | 1 | 1 | Serious |
| Mon 10 Sep 1990 | Hillingdon | 2 | 2 | Slight |
| Mon 10 Sep 1990 | Hillingdon | 2 | 2 | Slight |
| Wed 12 Sep 1990 | Hillingdon | 2 | 1 | Slight |
| Sun 16 Sep 1990 | Hillingdon | 2 | 1 | Slight |
| Tue 18 Sep 1990 | Hillingdon | 2 | 3 | Serious |
| Wed 19 Sep 1990 | Hillingdon | 3 | 1 | Slight |
| Fri 21 Sep 1990 | Hillingdon | 1 | 1 | Slight |
| Fri 21 Sep 1990 | Hillingdon | 2 | 3 | Serious |
| Tue 25 Sep 1990 | Hillingdon | 2 | 1 | Slight |
| Sat 29 Sep 1990 | Hillingdon | 2 | 1 | Serious |
| Wed 3 Oct 1990 | Hillingdon | 2 | 1 | Slight |
| Fri 5 Oct 1990 | Hillingdon | 2 | 1 | Slight |
| Mon 8 Oct 1990 | Hillingdon | 1 | 1 | Serious |
| Tue 9 Oct 1990 | Hillingdon | 1 | 1 | Slight |
| Thu 11 Oct 1990 | Hillingdon | 2 | 2 | Serious |
| Fri 12 Oct 1990 | Hillingdon | 1 | 1 | Serious |
| Sun 14 Oct 1990 | Hillingdon | 3 | 1 | Slight |
| Sat 27 Oct 1990 | Hillingdon | 2 | 2 | Serious |
| Sun 11 Nov 1990 | Hillingdon | 2 | 1 | Slight |
| Thu 15 Nov 1990 | Hillingdon | 2 | 2 | Serious |
| Fri 16 Nov 1990 | Hillingdon | 1 | 2 | Serious |
| Mon 19 Nov 1990 | Hillingdon | 1 | 1 | Serious |
| Tue 20 Nov 1990 | Hillingdon | 2 | 1 | Slight |
| Tue 20 Nov 1990 | Hillingdon | 1 | 1 | Slight |
| Wed 21 Nov 1990 | Hillingdon | 2 | 1 | Slight |
| Wed 21 Nov 1990 | Hillingdon | 2 | 1 | Slight |
| Sat 24 Nov 1990 | Hillingdon | 3 | 3 | Serious |
| Sun 25 Nov 1990 | Hillingdon | 2 | 1 | Serious |
| Fri 30 Nov 1990 | Hillingdon | 2 | 1 | Slight |
| Sun 9 Dec 1990 | Hillingdon | 2 | 1 | Slight |
| Wed 19 Dec 1990 | Hillingdon | 2 | 3 | Slight |
| Wed 19 Dec 1990 | Hillingdon | 2 | 3 | Slight |
| Fri 21 Dec 1990 | Hillingdon | 1 | 1 | Slight |
| Fri 21 Dec 1990 | Hillingdon | 1 | 1 | Slight |