Police, fire and ambulance personnel attended a road accident near the railway bridge at Moreton at 9.50 pm on Saturday night.
Only one vehicle was involved, a silver Citroen Saxo, which was on its roof.
As a result, one male casualty was conveyed to Withybush Hospital, Haverfordwest, with non-life threatening injuries.
The road was clear at approximately 11.50 pm.