Boris Johnson has come out strongly over the question of transgender women competing in female sporting events.
The British Prime Minister says they should not, conceding his view may be "controversial".
"I also happen to think that women should have spaces - whether it's in hospitals, prison or changing rooms - which are dedicated to women. That's as far as my thinking has developed on this issue.
"If that puts me in conflict with some others, then we have got to work it all out. It doesn't mean I'm not immensely sympathetic to people who want to change gender, to transition and it's vital we give people the maximum love and support in making those decisions.
Kiwi Laurel Hubbard made history in Tokyo last year, becoming the first openly transgender individual athlete to compete at the Olympics.