A method of fluid flow control for use in an oilfield tubular positioned in a wellbore extending through a subterranean formation, the oilfield tubular for flowing fluid therethrough, the fluid having a characteristic which changes over time, the method comprising: flowing fluid through a first flow path and a second flow path positioned in a flow control apparatus , the flow rate through the first flow path differing to the flow rate through the second flow path , and the relative flow rate through the first flow path and the second flow path defining a flow ratio; flowing the fluid through a first inlet and a second inlet of a valve assembly positioned in the flow control apparatus to an outlet , the first inlet in fluid communication with the first flow path and the second inlet in fluid communication with the second flow path ; varying resistance to fluid flow through at least one of the first flow path and the second flow path , the resistance variation dependent on a change in the viscosity, flow rate, density, velocity, or other fluid flow characteristic of the fluid; changing the flow ratio in response to the step of varying the resistance through at least one of the first and second flow paths; moving a valve member positioned in a valve chamber of the valve assembly in response to the step of changing the flow ratio, the changing of the flow ratio being communicated to the valve member by the first inlet and the second inlet , wherein the valve member comprises: a flow sensor comprising a first arm positioned in the flow path from the first inlet and a second arm positioned in the flow path of the second inlet , and a fluid restriction arm ; and restricting fluid flow through the outlet in response to moving the fluid restriction arm of the valve member . flowing fluid through a first flow path and a second flow path positioned in a flow control apparatus , the flow rate through the first flow path differing to the flow rate through the second flow path , and the relative flow rate through the first flow path and the second flow path defining a flow ratio; flowing the fluid through a first inlet and a second inlet of a valve assembly positioned in the flow control apparatus to an outlet , the first inlet in fluid communication with the first flow path and the second inlet in fluid communication with the second flow path ; varying resistance to fluid flow through at least one of the first flow path and the second flow path , the resistance variation dependent on a change in the viscosity, flow rate, density, velocity, or other fluid flow characteristic of the fluid; changing the flow ratio in response to the step of varying the resistance through at least one of the first and second flow paths; moving a valve member positioned in a valve chamber of the valve assembly in response to the step of changing the flow ratio, the changing of the flow ratio being communicated to the valve member by the first inlet and the second inlet , wherein the valve member comprises: a flow sensor comprising a first arm positioned in the flow path from the first inlet and a second arm positioned in the flow path of the second inlet , and a fluid restriction arm ; and restricting fluid flow through the outlet in response to moving the fluid restriction arm of the valve member . a flow sensor comprising a first arm positioned in the flow path from the first inlet and a second arm positioned in the flow path of the second inlet , and a fluid restriction arm ; and restricting fluid flow through the outlet in response to moving the fluid restriction arm of the valve member . <EOS>