A single acting actuator (1, 101) for an aircraft landing gear assembly, the actuator comprising: a housing (2, 102); a cavity provided in the housing; a piston (3, 103) and a piston rod (4, 104) connected to the piston; the piston being mounted in the cavity for relative movement with respect to the housing such that the piston and piston rod are movable relative to the housing between a retracted position and an extended position; the piston dividing the cavity into first (5a, 105a) and second (5b, 105b) pressure chambers such that the volume of one of the pressure chambers is increased and the volume of the other is decreased as the piston is moved relative to the housing; the piston being movable relative to the housing from one of the retracted and extended positions to the other by a resultant force on the piston due to the pressure of actuator fluid in the first and second pressure chambers; wherein at least one of the pressure chambers is associated with first (8a, 8b, 108a, 108b) and second (9a, 9b, 109a, 109b) outlets, with the actuator being arranged such that, in respect of the relative movement in which the pressure chamber is the decreasing volume pressure chamber, in a first stage of the relative movement the first and second outlets are open thereby allowing actuator fluid to flow out of the pressure chamber through the first and second outlets and in a second stage of the relative movement the second outlet is open but the first outlet is closed, thereby acting to slow the relative movement of the piston with respect to the housing; wherein the actuator is configured such that the flow through the second outlet (9a, 9b, 109a, 109b), out of the pressure chamber (5a, 5b, 105a, 105b), is restricted relative to the flow through the first outlet (8a, 8b, 108a, 108b), out of the pressure chamber, characterised in that the second outlet is shaped to provide a restricted flow of actuator fluid out of the respective pressure chamber, relative to the first outlet. a housing (2, 102); a cavity provided in the housing; a piston (3, 103) and a piston rod (4, 104) connected to the piston; the piston being mounted in the cavity for relative movement with respect to the housing such that the piston and piston rod are movable relative to the housing between a retracted position and an extended position; the piston dividing the cavity into first (5a, 105a) and second (5b, 105b) pressure chambers such that the volume of one of the pressure chambers is increased and the volume of the other is decreased as the piston is moved relative to the housing; the piston being movable relative to the housing from one of the retracted and extended positions to the other by a resultant force on the piston due to the pressure of actuator fluid in the first and second pressure chambers; wherein at least one of the pressure chambers is associated with first (8a, 8b, 108a, 108b) and second (9a, 9b, 109a, 109b) outlets, with the actuator being arranged such that, in respect of the relative movement in which the pressure chamber is the decreasing volume pressure chamber, in a first stage of the relative movement the first and second outlets are open thereby allowing actuator fluid to flow out of the pressure chamber through the first and second outlets and in a second stage of the relative movement the second outlet is open but the first outlet is closed, thereby acting to slow the relative movement of the piston with respect to the housing;