Bobbeagle,
The Archer was at CrosslandMoor. CFI's permission was granted. The aircraft suffered a loss of power on the take-off roll. Take-off aborted, but wheels made contact with wet grass and skidded off the end of the runway. Im sure the AAIB report will tell you what happend, but I t has already come out on other fora as to what mistakes were made. It was an accident. No-one hurt, other than a bit of pride I suspect.