Helen Skelton introduces coverage from the World Aquatics Championships in Budapest, Hungary. Featuring on Saturday's schedule is the final of the women's 800m freestyle, where five-time Olympic and nine-time world champion Katie Ledecky looks to defend her title, one of five golds the American won during the 2015 championships.

The final of the men's 4x100m freestyle relay also takes place, where the Olympic gold medallists of the United States want to set the record straight after missing out on the podium in Russia, although expect fierce competition from defending champions France.

Expert analysis is provided by double Olympic champion Rebecca Adlington and six-time world champion Mark Foster. Show less