It is known that overshoot in fuel flow rate as a result of compensating for engine heat soak effects can create transient over values in desired thrust parameters. By adjusting the normally calculated fuel flow rate to a fuel regulator (22) by the introduction of a fuel flow adjustment dependent upon a variable which is related to heat soak effects it is possible to reduce the extent of overshoot as well as the transient time period of that overshoot to ongoing operational state. The variable used may be direct or indirect and will generally utilise a temperature sensor (25) within the engine and/or other engine control procedures which may be extrapolated from such sensor values to provide a variable for heat soak compensation.