“There are some good memories but also some tough times,” says New Zealander Katie Glynn, now Great Britain women’s assistant coach, who returns to the Olympic Park for the first time on Wednesday after experiencing a horror injury at London 2012.

Many will remember Glynn’s tenacity at the London Games when she was hit flush in the head from an accidental swinging stick by Holland’s Ellen Hoog during the Olympic semi-final, with blood pouring, only to return soon after with stitches and a bandage.