The competition has made moves to exclude transgender woman who have not yet fully transitioned. Previously they allowed anyone who simply identified as just ‘a woman’ to participate.

The cyclist, who set a national junior men’s record over 25 miles in 2018 before transitioning, declared: ‘I’m having to consider an exit plan from this terrible island’.

The sport of women’s disc golf – the attempt to emulate the classic game using frisbees – has itself mired in similar controversies that have plagued other women’s sports.

The guidance, which is to be released next month and will apply to all state and independent single-sex schools in England, aims to protect girls’ safety and ensure fair competition in sport.

Dwyane Wade, who is dad to a transgender daughter, Zaya, says he no longer lives in Florida due to what he perceives as restrictive state policies that violate LGBTQ rights.

Transgender woman Glenique Frank, 54, of Northamptonshire – who finished the London Marathon ahead of 14,000 runners in the female category – has offered to give back her medal.

Carl Heneghan (pictured), director of Oxford University’s Centre for Evidence-Based Medicine, said the ONS findings could be ‘biased’ because it does not do fieldwork to test their validity.