Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 11 Jan 1999 | Spelthorne | 2 | 1 | Slight |
| Tue 12 Jan 1999 | Spelthorne | 2 | 1 | Slight |
| Thu 21 Jan 1999 | Hillingdon | 1 | 1 | Slight |
| Sat 30 Jan 1999 | Hillingdon | 1 | 1 | Slight |
| Thu 18 Mar 1999 | Hillingdon | 1 | 1 | Slight |
| Sat 3 Apr 1999 | Hillingdon | 1 | 1 | Slight |
| Sun 18 Apr 1999 | Hillingdon | 1 | 1 | Slight |
| Thu 29 Apr 1999 | Hillingdon | 3 | 1 | Slight |
| Mon 10 May 1999 | Spelthorne | 2 | 2 | Slight |
| Sat 15 May 1999 | Spelthorne | 1 | 1 | Serious |
| Sat 22 May 1999 | Spelthorne | 2 | 1 | Serious |
| Fri 4 Jun 1999 | Hillingdon | 3 | 1 | Slight |
| Sun 6 Jun 1999 | Hillingdon | 1 | 1 | Slight |
| Sun 20 Jun 1999 | Spelthorne | 1 | 1 | Serious |
| Tue 29 Jun 1999 | London Airport (Heathrow) | 1 | 1 | Slight |
| Thu 8 Jul 1999 | Hillingdon | 2 | 1 | Slight |
| Sat 7 Aug 1999 | Spelthorne | 1 | 2 | Serious |
| Mon 9 Aug 1999 | Hillingdon | 2 | 1 | Slight |
| Tue 10 Aug 1999 | Hillingdon | 2 | 1 | Slight |
| Tue 31 Aug 1999 | Spelthorne | 2 | 2 | Slight |
| Thu 7 Oct 1999 | Hillingdon | 2 | 1 | Slight |
| Thu 4 Nov 1999 | Hillingdon | 2 | 1 | Slight |
| Wed 10 Nov 1999 | Hillingdon | 2 | 1 | Slight |
| Thu 16 Dec 1999 | Hillingdon | 2 | 1 | Slight |
| Mon 20 Dec 1999 | Hillingdon | 2 | 1 | Slight |
| Thu 23 Dec 1999 | Hillingdon | 1 | 1 | Slight |
| Tue 28 Dec 1999 | Hillingdon | 2 | 1 | Slight |