Britain's double Olympic boxing champion Nicola Adams has re-iterated her opinion that transgender athletes should not be permitted in female competitions and should have their own category.

The 37-year-old, who famously won the first ever female boxing Olympic gold medal when she claimed the flyweight title at London 2012, made her feelings known in reference to New Zealand transgender weightlifter Laurel Hubbard.

In response to a tweet about the Kiwi's eligibility, she said: "I’ve already said it before make a transgender category then there will be no debates or arguing and everyone gets to compete.

"But as always the simplest solution always seems to be the hardest."

Hubbard is currently bidding for a place at the Tokyo 2020 Olympics, but has faced controversy surrounding her legitimacy to compete in female competition.

In January, the 42-year-old won the first Olympic qualifying event, claiming the title in the super-heavyweight contest at the Roma World Cup weightlifting after recovering from a potentially career-ending injury at the 2018 Commonwealth Games.

Adams first made her feelings on the topic known in early 2019 when she responded to a tweet from Sharron Davies about making the sport fair and equal when it comes to transgender athletes.