Great Britain's Hannah Miley and Aimee Willmott have both qualified for the final of the women's 400m individual medley at the World Swimming Championships.

Miley, who won the silver medal in this event two years ago, tied for first in her heat to progress with the fourth-fastest time overall.

Willmott went in the final heat, alongside defending champion Katinka Hosszu of Hungary, and did enough to set the seventh-fastest time of the morning.

Hosszu was quickest in the heats, completing the first 200m ahead of world record pace before slowing in the final couple of lengths.