Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Thu 5 Jan 1984 | Hillingdon | 5 | 1 | Slight |
| Tue 10 Jan 1984 | Hillingdon | 1 | 1 | Serious |
| Wed 11 Jan 1984 | Hillingdon | 1 | 1 | Slight |
| Thu 12 Jan 1984 | Hillingdon | 2 | 1 | Serious |
| Sun 15 Jan 1984 | Hillingdon | 2 | 1 | Slight |
| Mon 16 Jan 1984 | Hillingdon | 2 | 2 | Slight |
| Tue 24 Jan 1984 | Hillingdon | 1 | 1 | Serious |
| Thu 26 Jan 1984 | Hillingdon | 1 | 1 | Serious |
| Thu 26 Jan 1984 | Hillingdon | 1 | 1 | Serious |
| Fri 27 Jan 1984 | Hillingdon | 1 | 1 | Slight |
| Sat 28 Jan 1984 | Hillingdon | 2 | 1 | Slight |
| Thu 23 Feb 1984 | Hillingdon | 2 | 1 | Slight |
| Fri 24 Feb 1984 | Hillingdon | 2 | 1 | Serious |
| Thu 1 Mar 1984 | Hillingdon | 2 | 1 | Slight |
| Thu 1 Mar 1984 | Hillingdon | 2 | 1 | Slight |
| Mon 5 Mar 1984 | Hillingdon | 2 | 1 | Slight |
| Wed 7 Mar 1984 | Hillingdon | 1 | 1 | Slight |
| Wed 7 Mar 1984 | Hillingdon | 2 | 1 | Slight |
| Thu 8 Mar 1984 | Hillingdon | 1 | 1 | Slight |
| Sat 24 Mar 1984 | Hillingdon | 1 | 1 | Slight |
| Wed 28 Mar 1984 | Hillingdon | 1 | 1 | Serious |
| Wed 4 Apr 1984 | Hillingdon | 2 | 1 | Slight |
| Sat 14 Apr 1984 | Hillingdon | 2 | 1 | Serious |
| Sat 14 Apr 1984 | Hillingdon | 2 | 1 | Slight |
| Mon 16 Apr 1984 | Hillingdon | 2 | 1 | Slight |
| Thu 26 Apr 1984 | Hillingdon | 2 | 1 | Slight |
| Mon 7 May 1984 | Hillingdon | 2 | 1 | Slight |
| Wed 9 May 1984 | Hillingdon | 3 | 1 | Slight |
| Fri 11 May 1984 | Harrow | 2 | 1 | Slight |
| Sat 19 May 1984 | Hillingdon | 2 | 2 | Serious |
| Tue 22 May 1984 | Hillingdon | 3 | 1 | Slight |
| Wed 23 May 1984 | Hillingdon | 2 | 1 | Slight |
| Thu 24 May 1984 | Hillingdon | 2 | 1 | Slight |
| Mon 4 Jun 1984 | Hillingdon | 2 | 1 | Slight |
| Mon 4 Jun 1984 | Hillingdon | 2 | 1 | Slight |
| Sun 10 Jun 1984 | Hillingdon | 2 | 2 | Slight |
| Thu 21 Jun 1984 | Hillingdon | 2 | 1 | Serious |
| Thu 21 Jun 1984 | Hillingdon | 2 | 1 | Slight |
| Tue 26 Jun 1984 | Hillingdon | 2 | 2 | Slight |
| Thu 28 Jun 1984 | Hillingdon | 2 | 1 | Slight |
| Sun 1 Jul 1984 | Hillingdon | 2 | 1 | Slight |
| Mon 2 Jul 1984 | Hillingdon | 2 | 1 | Slight |
| Fri 6 Jul 1984 | Hillingdon | 2 | 1 | Slight |
| Sun 8 Jul 1984 | Hillingdon | 2 | 4 | Slight |
| Tue 10 Jul 1984 | Hillingdon | 1 | 1 | Slight |
| Fri 20 Jul 1984 | Hillingdon | 2 | 1 | Slight |
| Wed 25 Jul 1984 | Hillingdon | 1 | 1 | Serious |
| Thu 26 Jul 1984 | Hillingdon | 2 | 1 | Slight |
| Sat 28 Jul 1984 | Hillingdon | 3 | 3 | Slight |
| Mon 30 Jul 1984 | Hillingdon | 1 | 1 | Slight |
| Sun 5 Aug 1984 | Hillingdon | 2 | 3 | Slight |
| Mon 6 Aug 1984 | Hillingdon | 2 | 1 | Slight |
| Wed 8 Aug 1984 | Hillingdon | 2 | 1 | Slight |
| Wed 8 Aug 1984 | Hillingdon | 2 | 1 | Slight |
| Sat 11 Aug 1984 | Hillingdon | 1 | 1 | Slight |
| Sat 18 Aug 1984 | Hillingdon | 1 | 1 | Slight |
| Tue 28 Aug 1984 | Hillingdon | 2 | 1 | Slight |
| Sat 1 Sep 1984 | Hillingdon | 2 | 2 | Slight |
| Thu 6 Sep 1984 | Hillingdon | 2 | 1 | Slight |
| Thu 6 Sep 1984 | Hillingdon | 2 | 1 | Serious |
| Sat 15 Sep 1984 | Hillingdon | 2 | 1 | Slight |
| Sat 15 Sep 1984 | Hillingdon | 3 | 2 | Serious |
| Mon 17 Sep 1984 | Hillingdon | 1 | 1 | Slight |
| Mon 17 Sep 1984 | Hillingdon | 4 | 1 | Slight |
| Wed 26 Sep 1984 | Hillingdon | 2 | 1 | Slight |
| Fri 28 Sep 1984 | Hillingdon | 2 | 1 | Slight |
| Wed 3 Oct 1984 | Hillingdon | 3 | 1 | Slight |
| Mon 8 Oct 1984 | Hillingdon | 1 | 1 | Slight |
| Tue 9 Oct 1984 | Hillingdon | 1 | 1 | Slight |
| Tue 9 Oct 1984 | Hillingdon | 1 | 1 | Serious |
| Fri 12 Oct 1984 | Hillingdon | 1 | 1 | Slight |
| Mon 15 Oct 1984 | Hillingdon | 2 | 1 | Slight |
| Tue 16 Oct 1984 | Hillingdon | 2 | 1 | Slight |
| Wed 17 Oct 1984 | Hillingdon | 1 | 1 | Serious |
| Thu 25 Oct 1984 | Hillingdon | 3 | 2 | Slight |
| Thu 25 Oct 1984 | Hillingdon | 3 | 2 | Slight |
| Fri 26 Oct 1984 | Hillingdon | 1 | 1 | Slight |
| Sat 3 Nov 1984 | Hillingdon | 3 | 1 | Serious |
| Tue 6 Nov 1984 | Hillingdon | 2 | 1 | Slight |
| Wed 7 Nov 1984 | Hillingdon | 1 | 1 | Slight |
| Wed 7 Nov 1984 | Hillingdon | 2 | 1 | Slight |
| Mon 12 Nov 1984 | Hillingdon | 2 | 1 | Slight |
| Mon 12 Nov 1984 | Hillingdon | 2 | 2 | Fatal |
| Wed 14 Nov 1984 | Hillingdon | 2 | 1 | Slight |
| Wed 21 Nov 1984 | Hillingdon | 1 | 1 | Serious |
| Sat 24 Nov 1984 | Hillingdon | 2 | 2 | Slight |
| Sun 25 Nov 1984 | Hillingdon | 2 | 3 | Serious |
| Mon 26 Nov 1984 | Hillingdon | 1 | 1 | Slight |
| Mon 26 Nov 1984 | Hillingdon | 2 | 1 | Slight |
| Tue 27 Nov 1984 | Hillingdon | 2 | 1 | Slight |
| Fri 7 Dec 1984 | Hillingdon | 1 | 1 | Slight |
| Mon 10 Dec 1984 | Hillingdon | 1 | 1 | Slight |
| Fri 21 Dec 1984 | Hillingdon | 1 | 1 | Slight |
| Sat 22 Dec 1984 | Hillingdon | 3 | 3 | Slight |
| Wed 26 Dec 1984 | Hillingdon | 2 | 1 | Slight |