Boreas remained on escort duty in the eastern Atlantic until she arrived in Alexandria, Egypt on 11 November after escorting a convoy around the Cape of Good Hope. She was immediately assigned to escort the ships of Operation Stoneage that relieved the siege of Malta. The ship remained in the Mediterranean until January 1943 before she was briefly assigned to the 13th Destroyer Flotilla at Gibraltar.
Boreas continued its escort duties in the eastern Atlantic until November 11, when it arrived in Alexandria, Egypt after escorting a convoy around the Cape of Good Hope. It was then tasked with protecting ships involved in Operation Stoneage to relieve the siege of Malta. The ship remained in the Mediterranean until January 1943 before being temporarily assigned to the 13th Destroyer Flotilla at Gibraltar.