 Nyorai kupfuurira kweiyi ndima - Muna June 1942, chikamu chikuru cheHome Fleet chakatumirwa kuMediterranean kuti chiite chikamu muOperation Harpoon, kuedza kuendesa konvo imwe yekupa kuMalta kubva kumadokero, nepo konvo yechipiri yakananga kuMalta kubva kuEgypt Operation Vigorous. Onslow akanga ari rutivi rweForce W, simba rokufukidza iro raisanganisirawo ngarava yehondo, vatakuri vendege uye uye matatu cruisers. Force W yakabatana neHarpoon convoy nguva pfupi yapfuura payakapinda muMediterranean musi wa12 Chikumi, uye yakagara nayo kusvikira yadzoka, sezvakanga zvarongwa, sezvo convoy yakasvika kuStrait yeSicily manheru a14 Chikumi. Pashure pokudzokera kwake kumvura dzeBritain, Onslow akaumba rutivi rwomuperekedzi ari kure nokuda kweArctic convoy PQ 17uye kudzoka kwechikwata cheQP 13. PQ 17 yakarairwa kupararira uye kusungwa kwayo kwepedyo kwakadzoserwa zvichibva pane ruzivo rwakakanganiswa rwekuti Tirpitz yakanga yava kuda kurwisa ngoro, iyo yakaguma nekurasikirwa kwakanyanya kune ngarava dzisina kudzivirirwa dzekutengesa, ne 24 yezvikepe zve 25 zvekutengesa zvakanyura nemaGermany submarines uye ndege. Muna August 1942, Onslow yakashandiswa mukufambisa zvikamu zveHome Fleet kudzokera kumvura dzeBritain kubva kuGibraltar mushure meimwe Malta Convoy, Operation Pedestal. 