During 1940 she developed engine trouble and was dry docked for repairs and degaussing. She returned to service in early March when she was employed escorting convoys around the Western Approaches. In June 1941, she sailed to Falmouth for a refit. Following this, she was attached to Force H at Gibraltar. On 4 August 1942, Zulu with , and attacked and sank off Haifa and Zulus commanding officer, Commander R.T. White, DSO was Mentioned in Despatches for his leadership.
