A component for a gas turbine engine , comprising: an external surface bounding a hot gas path of the gas turbine engine; a cooling passage configured to deliver a cooling airflow therethrough, including: an internal surface located opposite the external surface, the internal surface and the external surface together defining a component wall ; and a plurality of trip strip features located along the internal surface, each trip strip feature having a trip strip height (E) extending from the internal surface and a trip strip width (W) extending along the internal surface in a flow direction of the cooling airflow through the cooling passage; and one or more cooling film bleed holes extending from the internal surface to the external surface, wherein a ratio of a trip strip pitch (P) between adjacent trip strip features in a width direction and the trip strip height (E) is between 2 and 4; wherein the one or more cooling film bleed holes each include a film hole inlet disposed between adjacent trip strip features of the plurality of trip strip features; the component being characterised in that relative to the flow direction, the one or more cooling film bleed holes are located closer to an upstream adjacent trip strip feature than to a downstream adjacent trip strip feature. an external surface bounding a hot gas path of the gas turbine engine; a cooling passage configured to deliver a cooling airflow therethrough, including: an internal surface located opposite the external surface, the internal surface and the external surface together defining a component wall ; and a plurality of trip strip features located along the internal surface, each trip strip feature having a trip strip height (E) extending from the internal surface and a trip strip width (W) extending along the internal surface in a flow direction of the cooling airflow through the cooling passage; and one or more cooling film bleed holes extending from the internal surface to the external surface, wherein a ratio of a trip strip pitch (P) between adjacent trip strip features in a width direction and the trip strip height (E) is between 2 and 4; wherein the one or more cooling film bleed holes each include a film hole inlet disposed between adjacent trip strip features of an internal surface located opposite the external surface, the internal surface and the external surface together defining a component wall ; and a plurality of trip strip features located along the internal surface, each trip strip feature having a trip strip height (E) extending from the internal surface and a trip strip width (W) extending along the internal surface in a flow direction of the cooling airflow through the cooling passage; and one or more cooling film bleed holes extending from the internal surface to the external surface, wherein a ratio of a trip strip pitch (P) between adjacent trip strip features in a width direction and the trip strip height (E) is between 2 and 4; wherein the one or more cooling film bleed holes each include a film hole inlet disposed between adjacent trip strip features of the plurality of trip strip features; the component being characterised in that relative to the flow direction, the one or more cooling film bleed holes are located closer to an upstream adjacent trip strip feature than to a downstream adjacent trip strip feature. <EOS>