Hannah Miley finished fourth in the 800 metres freestyle at the World Short-Course Championships in Istanbul.
Miley had enjoyed a memorable victory on Wednesday when she withstood the challenge of Olympic champion Ye Shiwen in the 400m individual medley.
However, the 23-year-old was unable to repeat such heroics as she finished fourth, 0.56 seconds behind American Chloe Sutton in eight minutes 16.09 seconds.
City of Sheffield's Eleanor Faulkner was eighth in 8mins 22.96secs.
Miley said: "I think I might have gone out a little bit harder than I expected but that is the experience of racing an 800 at such a high standard.
"I am used to doing it at district or maybe national level but to do it at international level is a whole different kettle of fish. So I am really happy with that."