Currently, under International Olympic Committee guidelines, transgender athletes can compete in elite sport as a woman, provided their testosterone levels are below 10 nanomoles per litre for at least 12 months before their first competition.

But the report from UK Sport, Sport England, Sport Wales, Sport Scotland and Sport Northern Ireland states that testosterone suppression does not take away the physical advantages of trans women in female sport.

As a result, say the sports councils, it is not possible to guarantee safety and competitive fairness in some activities and different sports will have to find ‘innovative and creative ways to ensure nobody is left out’.

It also suggests sports could come up with new formats, such as non-contact versions of team sports, that can be played safely and fairly by everyone.