 "Onslow", on patrol in the Channel, was diverted in an unsuccessful attempt to search for the German boats, followed by searching for survivors and bodies in Lyme Bay.On 14 and 15 May 1944, "Onslow" formed part of the escort for the two aircraft carriers and as they launched attacks against shipping in the ports of Rørvik and Stadlandet in German occupied Norway, as part of a series of strikes by British aircraft carriers against Norway with the intention of distracting German attention from Northern France, as well as stopping German coastal shipping.The Invasion of Normandy on 6 June 1944, saw "Onslow" deployed in screening the invasion force as part of Operation Neptune.