The invention relates to a trenching system including a conveyor system for conveying spoil from a trench to a collector. In particular, the invention relates to a trenching assembly comprising a hydraulic blade motor; a blade, wherein the blade is driven by the hydraulic blade motor; a hydraulic conveyor motor; a conveyor for conveying spoil from a trench to a collector, wherein the conveyor is driven by the hydraulic conveyor motor; and a hydraulic control arrangement for controlling the flow of hydraulic fluid from a hydraulic pump to the hydraulic blade motor and the hydraulic conveyor motor. The invention also relates to a method of excavating a trench including the step of conveying spoil from the trench to a collector.