British Athletics named a team of 26 athletes for the World Relays in Yokohama on 11-12 May.
The men’s 4x100m team features three of the four sprinters who won gold at the European Championships in Berlin (Ujah, Gemili and Mitchell-Blake) as well as Reece Prescod.
The women’s 4x100m team features Asha Philip and Bianca Williams who were all part of the gold medal-winning team in Berlin.
The 4x400m teams feature European champion Matthew Hudson-Smith and European fourth-placer Laviai Nielsen.
BRITISH TEAM FOR YOKOHAMA
Men
4x100m: Harry Aikines-Aryeetey, Adam Gemili, Richard Kilty, Nethaneel Mitchell-Blake, Reece Prescod, CJ Ujah
4x400m: Cameron Chalmers, Dwayne Cowan, Matthew Hudson-Smith, Martyn Rooney, Jamal Rhoden-Stevens, Owen Smith, Rabah Yousif
Women
4x100m: Kristal Awuah, Desiree Henry, Daryll Neita, Ashleigh Nelson, Asha Philip, Bianca Williams
4x400m: Finette Agyapong, Amy Allcock, Zoey Clark, Emily Diamond, Eilidh Doyle, Laviai Nielsen, Anyika Onuora