On 31 October 1940, "Antelope" was part of the escort convoy OB 237 when it encountered off northwestern Ireland. Depth charges from "Antelope" and drove "U-31" to the surface, where her crew abandoned ship. "Antelope" attempted to board "U-31", but collided with the unmanned submarine, damaging the destroyer and sinking "U-31". "Antelope" rescued 44 of the "U-31"s crew, one of whom died on board, and returned them to the Clyde. Lt. Cdr. White was awarded his first bar to his D.S.O. following this sinking.