British middle distance runner Josh Kerr has shattered the 27-year world mile record at London Stadium as he made his "Project 222" a reality, shaving almost three seconds off his personal best in the process.

At the London Diamond League on Saturday, 2024 Olympic 1,500m silver medallist Kerr will try to beat a time that has stood since 1999.

To support Kerr's attempt to break the men's mile world record, there's been plenty of research, testing and product development