Granddaughter of Mr Easterby, Joanna rides on the flat and in Point to Points. One of the country's top amateur riders, Joanna shared the Lady Amateur Riders championship in 2015 with Serena Brotherton, both having six wins. Three of her winners were aboard Tapis Libre. In July 2018 Joanna rode a double for the yard when she won both divisions of the amateur riders' handicap at Wolverhampton on Maldonado and Aphaea.