On 13 October 1956 a passenger train hauled by Class 8F 2-8-0 WD512 was involved in a head-on collision with a permanent way train hauled by 0-6-0 diesel shunter WD877 Bari between Weaversdown Halt and Liss Forest Road stations.
In the light of the reducing role of the military and the severely reduced British Empire, it was decided by the Ministry of Defence to close the railway.