An internally cooled airfoil comprising: an airfoil body shaped to form a leading edge, a trailing edge, a pressure side and a suction side surrounding an internal cooling channel; a baffle insert disposed within the internal cooling channel, the baffle insert comprising: a hollow liner body having a perimeter shaped to correspond to the shape of the internal cooling channel and to form a cooling air supply duct; and a plurality of cooling holes extending through the hollow liner body to direct cooling air from the supply duct into the internal cooling channel; and a plurality of standoffs (34,36,56,74,76,78) positioned between the airfoil body and the liner body to maintain a spacing between the airfoil body and the liner body, each of the plurality of standoffs including: a landing positioned against a first cooling circuit surface; a trough (46,68) surrounding the standoff and positioned in a second cooling circuit surface to form a recessed base (54,70); and a sidewall extending between the trough and the landing; wherein the troughs (46,68) of the plurality of standoffs are recessed into the second cooling circuit surface such that a height of the standoffs between the recessed bases (54,70) and the landings (50,64) is greater than the minimum spacing (h) between the first cooling circuit surface and the second cooling circuit surface; and characterised in that A. the recessed base (54,70) extends into an exterior surface of the liner body comprising the second cooling circuit surface, and the landing (50,64) extends beyond the exterior surface of the liner body; or B. the recessed base (54,70) extends into an interior surface of the airfoil body comprising the second cooling circuit surface, and the landing (50,64) extends beyond the interior surface of the airfoil body. an airfoil body shaped to form a leading edge, a trailing edge, a pressure side and a suction side surrounding an internal cooling channel; a baffle insert disposed within the internal cooling channel, the baffle insert comprising: a hollow liner body having a perimeter shaped to correspond to the shape of the internal cooling channel and to form a cooling air supply duct; and a plurality of cooling holes extending through the hollow liner body to direct cooling air from the supply duct into the internal cooling channel; and a hollow liner body having a perimeter shaped to correspond to the shape of the internal cooling channel and to form a cooling air supply duct; and a plurality of cooling holes extending through the hollow liner body to direct cooling air from the supply duct into the internal cooling channel; and a plurality of standoffs (34,36,56,74,76,78) positioned between the airfoil body and the liner body to maintain a spacing between the airfoil body and the liner body, each of the plurality of standoffs including: a landing positioned against a first cooling circuit surface; a trough (46,68) surrounding the standoff and positioned in a second cooling circuit surface to form a recessed base (54,70); and a sidewall extending between the trough and the landing; a landing positioned against a first cooling circuit surface; a trough (46,68) surrounding the standoff and positioned in a second cooling circuit surface to form a recessed base (54,70); and a sidewall extending between the trough and the landing; wherein the troughs (46,68) of the plurality of standoffs are recessed into the second cooling circuit surface such that a height of the standoffs between the recessed bases (54,70) and the landings (50,64) is greater than the minimum spacing (h) between the first cooling circuit surface and the second cooling circuit surface; and characterised in that A. the recessed base (54,70) extends into an exterior surface of the liner body comprising the second cooling circuit surface, and the landing (50,64) extends beyond the exterior surface of the liner body; or B. the recessed base (54,70) extends into an interior surface of the airfoil body comprising the second cooling circuit surface, and the landing (50,64) extends beyond the interior surface of the airfoil body. A. the recessed base (54,70) extends into an exterior surface of the liner body comprising the second cooling circuit surface, and the landing (50,64) extends beyond the exterior surface of the liner body; or B. the recessed base (54,70) extends into an interior surface of the airfoil body comprising the second cooling circuit surface, and the landing (50,64) extends beyond the interior surface of the airfoil body.