Adam Peaty claims individual second gold, GB take 4x100m mixed medley in world record time
Adam Peaty secured his second gold of the World Championships after claiming the men's 50m breaststroke with a time of 26.51 seconds.
The 20-year-old adds the 50m gold to the 100m breaststroke one he claimed on Monday to become the first man to complete the double.
Cameron van der Burgh of South Africa had to settle for silver once more as the Briton caught the world champion with the final stroke to win.
There was further success for Peaty and team GB, as a world record time of 3.41.71 minutes secured the 4x100m mixed medley gold.
Peaty joined Chris Walker-Hebborn, Siobhan O'Connor and Fran Halsall to clock a combined time of three minutes 41.71 seconds to break the record of 3:42.33 set by the United States in the heats earlier on Wednesday.
In fact, it was the third time in a day that the mark fell.
American quartet Ryan Murphy, Kevin Cordes, Kendyl Stewart and Lia Neal had themselves wiped more than three-and-a-half seconds off the short-lived world record of 3:45.87 which Russia set in winning the second heat.
The mixed medley relay is being held at the world championships for the first time but is not on the Olympic programme.
GB are top of the medal table with a total of seven medals: four golds, one silver and two bronze.