'Referee was biased' Team GB's Walkden blasts Tokyo 2020 officials for taekwondo defeat 0 7 29 Jul 2021 08:39 Express.co.uk BIANCA WALKDEN - Team GB's taekwondo bronze medalist from Tokyo 2020 - has taken aim at the referee who oversaw her defeat in the semi-finals to South Korea's Lee Da-bin during an interview on Good Morning Britain.