Great Britain have produced a season-best time to clinch a place in the women's 4x100m relay final at the World Athletics Championships in Beijing.
The quartet clocked 42.48s to progress behind Jamaica, who finished first in the heat with a time of 41.84s, and ahead of Canada in third on 42.60s.
The race from Asha Philip, Jodie Williams, Bianca Williams and Desiree Henry has added to a successful morning on the track for GB.
Earlier, Britain's men and women both safely moved into Sunday's final of the 4x400m final.
