19-year-old sprinter Adam Gemili saw off his British rivals in the men's 100m B race at the Olympic Stadium in Stratford. He won with his fastest time of the season, 10.16 seconds.
Perri Shakes-Drayton set a personal best time of 53.67 seconds in the women's 400m hurdles. She came second behind the Czech athlete Zuzana Hejnova.
More top news
Labour leader tells May Day rally his party 'stand absolutely against racism in any form'.
Video has emerged of a police car colliding with a cyclist and driving over a bike during a mass bike ride in central London.
Harlesden's James DeGale has successfully defended his IBF super middleweight title against Rogelio Medina.