Britain claimed their fifth medal of the night in the Aquatics Centre when the women's 4x100m (34pts) freestyle relay squad came third in the last event of the session.
Claire Cashmore gave them the lead at the halfway point but Australia took over on the third leg to which Susie Rodgers had no answer to hand over in second.
While Louise Watkin produced a valiant effort on the final leg, she just lost out to the United States in a stroke for stroke duel to touch in 4:24.71, 0.14secs adrift as Australia completed a dominant victory.