Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 2 Jan 1989 | Ealing | 1 | 1 | Serious |
| Mon 2 Jan 1989 | Ealing | 1 | 1 | Serious |
| Fri 6 Jan 1989 | Hillingdon | 1 | 1 | Serious |
| Fri 6 Jan 1989 | Hillingdon | 3 | 1 | Slight |
| Mon 9 Jan 1989 | Ealing | 3 | 2 | Slight |
| Mon 9 Jan 1989 | Ealing | 1 | 1 | Slight |
| Tue 10 Jan 1989 | Ealing | 2 | 1 | Slight |
| Fri 13 Jan 1989 | Ealing | 1 | 1 | Slight |
| Sat 14 Jan 1989 | Ealing | 2 | 1 | Slight |
| Wed 18 Jan 1989 | Ealing | 1 | 1 | Slight |
| Sun 22 Jan 1989 | Ealing | 2 | 3 | Slight |
| Sun 22 Jan 1989 | Hillingdon | 3 | 1 | Slight |
| Tue 24 Jan 1989 | Ealing | 2 | 1 | Slight |
| Tue 24 Jan 1989 | Ealing | 2 | 1 | Serious |
| Sun 29 Jan 1989 | Ealing | 2 | 1 | Slight |
| Tue 31 Jan 1989 | Hillingdon | 1 | 1 | Slight |
| Thu 2 Feb 1989 | Ealing | 1 | 1 | Slight |
| Thu 2 Feb 1989 | Ealing | 2 | 1 | Slight |
| Thu 2 Feb 1989 | Ealing | 1 | 1 | Slight |
| Sat 4 Feb 1989 | Ealing | 2 | 1 | Slight |
| Mon 6 Feb 1989 | Ealing | 1 | 1 | Slight |
| Fri 10 Feb 1989 | Ealing | 2 | 1 | Slight |
| Sat 11 Feb 1989 | Hillingdon | 1 | 1 | Slight |
| Sun 12 Feb 1989 | Ealing | 2 | 1 | Slight |
| Mon 13 Feb 1989 | Hillingdon | 2 | 1 | Slight |
| Mon 13 Feb 1989 | Hillingdon | 2 | 1 | Slight |
| Sat 18 Feb 1989 | Ealing | 2 | 1 | Slight |
| Thu 23 Feb 1989 | Ealing | 2 | 1 | Slight |
| Sun 26 Feb 1989 | Hillingdon | 2 | 1 | Slight |
| Sun 26 Feb 1989 | Ealing | 1 | 1 | Slight |
| Mon 27 Feb 1989 | Ealing | 1 | 1 | Slight |
| Mon 6 Mar 1989 | Hillingdon | 2 | 1 | Slight |
| Wed 8 Mar 1989 | Ealing | 2 | 1 | Slight |
| Tue 14 Mar 1989 | Ealing | 2 | 1 | Slight |
| Thu 16 Mar 1989 | Ealing | 1 | 1 | Slight |
| Thu 23 Mar 1989 | Hillingdon | 2 | 1 | Slight |
| Wed 5 Apr 1989 | Hillingdon | 1 | 1 | Slight |
| Wed 5 Apr 1989 | Hillingdon | 2 | 1 | Slight |
| Thu 6 Apr 1989 | Ealing | 2 | 1 | Slight |
| Thu 6 Apr 1989 | Hillingdon | 2 | 1 | Slight |
| Tue 11 Apr 1989 | Ealing | 1 | 1 | Slight |
| Wed 12 Apr 1989 | Ealing | 1 | 1 | Slight |
| Thu 20 Apr 1989 | Hillingdon | 2 | 2 | Slight |
| Mon 24 Apr 1989 | Ealing | 1 | 2 | Slight |
| Wed 26 Apr 1989 | Hillingdon | 1 | 1 | Serious |
| Thu 27 Apr 1989 | Hillingdon | 3 | 1 | Slight |
| Fri 28 Apr 1989 | Ealing | 2 | 1 | Slight |
| Fri 5 May 1989 | Ealing | 1 | 1 | Serious |
| Sun 7 May 1989 | Hillingdon | 2 | 1 | Slight |
| Sun 14 May 1989 | Ealing | 2 | 2 | Slight |
| Tue 16 May 1989 | Ealing | 2 | 2 | Serious |
| Sun 21 May 1989 | Ealing | 2 | 1 | Slight |
| Tue 23 May 1989 | Ealing | 2 | 1 | Slight |
| Wed 24 May 1989 | Hillingdon | 2 | 2 | Slight |
| Wed 24 May 1989 | Hillingdon | 2 | 3 | Slight |
| Wed 24 May 1989 | Ealing | 2 | 1 | Slight |
| Thu 25 May 1989 | Ealing | 1 | 1 | Slight |
| Fri 26 May 1989 | Ealing | 2 | 1 | Slight |
| Fri 26 May 1989 | Ealing | 2 | 1 | Slight |
| Fri 26 May 1989 | Hillingdon | 1 | 1 | Serious |
| Sat 27 May 1989 | Ealing | 1 | 4 | Serious |
| Wed 31 May 1989 | Hillingdon | 2 | 1 | Slight |
| Thu 1 Jun 1989 | Hillingdon | 3 | 3 | Serious |
| Mon 5 Jun 1989 | Hillingdon | 2 | 1 | Slight |
| Tue 6 Jun 1989 | Ealing | 2 | 1 | Slight |
| Fri 9 Jun 1989 | Hillingdon | 1 | 1 | Serious |
| Fri 9 Jun 1989 | Hillingdon | 1 | 1 | Serious |
| Sat 10 Jun 1989 | Hillingdon | 3 | 1 | Slight |
| Sun 11 Jun 1989 | Hillingdon | 2 | 1 | Slight |
| Sun 11 Jun 1989 | Ealing | 2 | 2 | Slight |
| Sun 11 Jun 1989 | Hillingdon | 2 | 1 | Slight |
| Fri 16 Jun 1989 | Hillingdon | 2 | 1 | Slight |
| Fri 16 Jun 1989 | Hillingdon | 4 | 3 | Slight |
| Sat 17 Jun 1989 | Ealing | 2 | 1 | Slight |
| Sat 17 Jun 1989 | Ealing | 2 | 1 | Slight |
| Mon 19 Jun 1989 | Hillingdon | 2 | 1 | Slight |
| Mon 19 Jun 1989 | Ealing | 1 | 1 | Slight |
| Wed 21 Jun 1989 | Ealing | 2 | 1 | Slight |
| Wed 21 Jun 1989 | Ealing | 2 | 1 | Slight |
| Wed 21 Jun 1989 | Ealing | 2 | 1 | Slight |
| Wed 21 Jun 1989 | Ealing | 2 | 1 | Slight |
| Thu 22 Jun 1989 | Ealing | 1 | 1 | Slight |
| Sun 25 Jun 1989 | Ealing | 1 | 1 | Slight |
| Mon 26 Jun 1989 | Ealing | 1 | 1 | Slight |
| Mon 26 Jun 1989 | Hillingdon | 1 | 1 | Slight |
| Wed 28 Jun 1989 | Ealing | 2 | 2 | Serious |
| Thu 29 Jun 1989 | Ealing | 2 | 1 | Slight |
| Fri 30 Jun 1989 | Ealing | 2 | 1 | Slight |
| Sun 2 Jul 1989 | Ealing | 2 | 1 | Slight |
| Tue 4 Jul 1989 | Ealing | 1 | 1 | Serious |
| Wed 5 Jul 1989 | Hillingdon | 2 | 1 | Slight |
| Fri 14 Jul 1989 | Ealing | 1 | 1 | Slight |
| Fri 14 Jul 1989 | Ealing | 1 | 1 | Serious |
| Sun 16 Jul 1989 | Ealing | 2 | 2 | Serious |
| Thu 20 Jul 1989 | Hillingdon | 1 | 1 | Slight |
| Thu 20 Jul 1989 | Hillingdon | 1 | 1 | Slight |
| Mon 24 Jul 1989 | Hillingdon | 3 | 2 | Slight |
| Mon 24 Jul 1989 | Hillingdon | 3 | 2 | Slight |
| Tue 25 Jul 1989 | Hillingdon | 2 | 1 | Slight |
| Fri 28 Jul 1989 | Hillingdon | 1 | 1 | Slight |
| Fri 28 Jul 1989 | Ealing | 1 | 1 | Slight |
| Fri 28 Jul 1989 | Ealing | 1 | 1 | Slight |
| Wed 2 Aug 1989 | Ealing | 2 | 1 | Serious |
| Fri 4 Aug 1989 | Ealing | 2 | 1 | Serious |
| Sun 6 Aug 1989 | Hillingdon | 2 | 1 | Slight |
| Mon 7 Aug 1989 | Hillingdon | 1 | 1 | Slight |
| Wed 9 Aug 1989 | Ealing | 2 | 1 | Serious |
| Wed 9 Aug 1989 | Ealing | 1 | 1 | Slight |
| Thu 10 Aug 1989 | Hillingdon | 1 | 1 | Serious |
| Fri 11 Aug 1989 | Ealing | 2 | 1 | Slight |
| Fri 11 Aug 1989 | Ealing | 2 | 1 | Slight |
| Fri 11 Aug 1989 | Ealing | 2 | 1 | Slight |
| Fri 11 Aug 1989 | Ealing | 1 | 1 | Slight |
| Fri 18 Aug 1989 | Ealing | 2 | 1 | Slight |
| Fri 18 Aug 1989 | Ealing | 2 | 1 | Slight |
| Fri 18 Aug 1989 | Ealing | 2 | 1 | Slight |
| Sat 19 Aug 1989 | Ealing | 1 | 1 | Slight |
| Mon 21 Aug 1989 | Hillingdon | 2 | 1 | Slight |
| Tue 22 Aug 1989 | Hillingdon | 2 | 1 | Slight |
| Thu 24 Aug 1989 | Ealing | 2 | 1 | Slight |
| Fri 25 Aug 1989 | Ealing | 1 | 1 | Serious |
| Sat 26 Aug 1989 | Ealing | 2 | 1 | Slight |
| Sat 2 Sep 1989 | Ealing | 3 | 1 | Slight |
| Sun 3 Sep 1989 | Hillingdon | 1 | 1 | Serious |
| Tue 5 Sep 1989 | Hillingdon | 2 | 1 | Slight |
| Wed 6 Sep 1989 | Hillingdon | 2 | 1 | Slight |
| Fri 8 Sep 1989 | Ealing | 2 | 2 | Slight |
| Mon 11 Sep 1989 | Ealing | 2 | 1 | Slight |
| Tue 12 Sep 1989 | Ealing | 2 | 1 | Slight |
| Fri 15 Sep 1989 | Ealing | 1 | 1 | Slight |
| Fri 15 Sep 1989 | Ealing | 1 | 1 | Slight |
| Sat 16 Sep 1989 | Ealing | 1 | 1 | Slight |
| Mon 18 Sep 1989 | Ealing | 1 | 1 | Serious |
| Tue 19 Sep 1989 | Hillingdon | 2 | 1 | Slight |
| Fri 22 Sep 1989 | Ealing | 1 | 1 | Slight |
| Wed 27 Sep 1989 | Hillingdon | 2 | 1 | Serious |
| Fri 29 Sep 1989 | Hillingdon | 3 | 1 | Slight |
| Fri 29 Sep 1989 | Hillingdon | 2 | 1 | Slight |
| Sat 30 Sep 1989 | Ealing | 1 | 1 | Serious |
| Tue 3 Oct 1989 | Ealing | 1 | 2 | Serious |
| Thu 5 Oct 1989 | Ealing | 1 | 1 | Slight |
| Fri 6 Oct 1989 | Ealing | 2 | 2 | Serious |
| Fri 6 Oct 1989 | Hillingdon | 1 | 1 | Slight |
| Sat 7 Oct 1989 | Hillingdon | 1 | 1 | Slight |
| Sun 8 Oct 1989 | Ealing | 2 | 1 | Slight |
| Tue 10 Oct 1989 | Ealing | 2 | 1 | Slight |
| Wed 11 Oct 1989 | Hillingdon | 2 | 1 | Slight |
| Sat 14 Oct 1989 | Ealing | 2 | 1 | Slight |
| Sat 14 Oct 1989 | Ealing | 1 | 1 | Serious |
| Wed 18 Oct 1989 | Ealing | 2 | 2 | Serious |
| Fri 20 Oct 1989 | Ealing | 2 | 1 | Slight |
| Sat 21 Oct 1989 | Ealing | 1 | 1 | Slight |
| Mon 23 Oct 1989 | Ealing | 2 | 2 | Slight |
| Wed 25 Oct 1989 | Ealing | 2 | 4 | Slight |
| Wed 25 Oct 1989 | Hillingdon | 1 | 1 | Serious |
| Sat 28 Oct 1989 | Ealing | 1 | 1 | Slight |
| Thu 2 Nov 1989 | Ealing | 2 | 1 | Slight |
| Thu 2 Nov 1989 | Ealing | 2 | 1 | Slight |
| Thu 2 Nov 1989 | Hillingdon | 1 | 1 | Slight |
| Fri 3 Nov 1989 | Ealing | 2 | 1 | Slight |
| Fri 3 Nov 1989 | Ealing | 2 | 1 | Slight |
| Mon 6 Nov 1989 | Hillingdon | 2 | 1 | Slight |
| Wed 8 Nov 1989 | Hillingdon | 2 | 1 | Slight |
| Thu 9 Nov 1989 | Ealing | 1 | 1 | Serious |
| Fri 10 Nov 1989 | Ealing | 2 | 1 | Slight |
| Mon 13 Nov 1989 | Hillingdon | 2 | 1 | Serious |
| Thu 16 Nov 1989 | Ealing | 3 | 2 | Slight |
| Sat 18 Nov 1989 | Hillingdon | 2 | 2 | Slight |
| Sun 19 Nov 1989 | Hillingdon | 1 | 1 | Serious |
| Tue 21 Nov 1989 | Ealing | 2 | 1 | Slight |
| Thu 23 Nov 1989 | Ealing | 1 | 1 | Slight |
| Fri 24 Nov 1989 | Hillingdon | 2 | 1 | Serious |
| Fri 24 Nov 1989 | Ealing | 1 | 1 | Slight |
| Fri 24 Nov 1989 | Ealing | 1 | 1 | Slight |
| Sat 25 Nov 1989 | Ealing | 2 | 3 | Serious |
| Mon 27 Nov 1989 | Ealing | 1 | 1 | Serious |
| Thu 30 Nov 1989 | Ealing | 1 | 3 | Slight |
| Thu 30 Nov 1989 | Ealing | 2 | 1 | Slight |
| Mon 4 Dec 1989 | Hillingdon | 1 | 2 | Serious |
| Wed 6 Dec 1989 | Ealing | 1 | 1 | Slight |
| Wed 6 Dec 1989 | Ealing | 1 | 1 | Slight |
| Wed 6 Dec 1989 | Ealing | 2 | 1 | Slight |
| Wed 6 Dec 1989 | Ealing | 2 | 1 | Serious |
| Fri 8 Dec 1989 | Ealing | 3 | 3 | Slight |
| Sat 9 Dec 1989 | Hillingdon | 2 | 1 | Slight |
| Sun 10 Dec 1989 | Ealing | 2 | 2 | Slight |
| Mon 11 Dec 1989 | Ealing | 2 | 1 | Slight |
| Wed 13 Dec 1989 | Ealing | 2 | 1 | Slight |
| Sat 16 Dec 1989 | Ealing | 2 | 1 | Slight |
| Tue 19 Dec 1989 | Ealing | 2 | 1 | Slight |
| Wed 20 Dec 1989 | Hillingdon | 2 | 1 | Serious |
| Wed 20 Dec 1989 | Ealing | 1 | 1 | Slight |
| Thu 21 Dec 1989 | Hillingdon | 2 | 1 | Slight |
| Fri 22 Dec 1989 | Ealing | 1 | 1 | Serious |
| Mon 25 Dec 1989 | Ealing | 2 | 1 | Slight |