She trained at the national academy in Nottingham, from 1999 to 2003. Then she played for a Berlin club She is currently playing in France for TT Saint Quentin.
She competed for Great Britain at the 2012 Summer Olympics.
In Women"s singles, in round 1, she defeated Caroline Kumahara, but in the second round, she lost to Kristin Silbereisen. In Women"s team, they lost to of Korea.
In June 2014, she was ranked Number 1 in England and 109th in the world.
Joanna has won national singles titles at U12, Cadet, Junior, U21 and Senior levels, girls’ doubles titles at U12, Cadet and Junior and both women's and mixed doubles at Senior level She won a bronze medal at the 2009 Commonwealth Championships in the women's doubles. She won a bronze medal at the 2010 Commonwealth Games in the mixed doubles. Joanna and Paul Drinkhall won gold in the mixed doubles competition at the 2014 Commonwealth Games in Glasgow, defeating fellow English pairing Liam Pitchford and Tin-Tin Ho in the final.