On 6 July, she cleared Mers-el-Kebir as a unit of the Western Task Force for the Allied invasion of Sicily. During the invasion, she screened the merchant ships and minelayers of Task Group 80.5 (TG 80.5), then patrolled off the Gela anchorage and covered minelaying operations. On 12 July, she departed the assault area, returning on 17 July, to Scoglitti, and on 31 July, to Palermo, with convoys. During August, she participated in numerous landings on the Sicilian coast and, in September, joined TG 81.6 to screen the transports and landing craft for the assault on the Axis boot at Salerno. Early on the morning of 13 September, she aided bombed and burning British hospital ship . The struggle to save the ship continued for over 36 hours, but, in the evening of 14 September, "Plunkett", on orders, fired on and sank the hulk.