[3][6][7] Judd won a gold medal as a member of the British junior women's team at the 2012 European Cross Country Championships.

At the British Olympic trials in June, she finished third, ahead of UK number one Marilyn Okoro.

Then in July at the 2012 World Junior Championships, she won a silver medal in the 800  m final in 2:00.96, which is a UK age 17 record.

She went on to reach the 1500 m final, finishing fifth and smashing her previous personal best, with a time of 4:09.93 which set another UK age 17 best.

She followed this up with victory at the Birmingham Grand Prix on 30 June 2013, running under two minutes for the first time in her career with 1:59.86.

In March 2017, Judd won the British Inter Counties Ladies' Cross Country Championships held at Loughborough, earning selection for the British team competing in the World Cross Country Championships later that month in Kampala.