Leah Underwood has 1 Union J concert.

Union J (originally Triple J) are a British boy band consisting of members Josh Cuthbert, JJ Hamblett, Jaymi Hensley and George Shelley. Shelley left in 2016, with Casey Johnson replacing him. However, Johnson left the group in 2017. They were formed in 2011 and were originally a trio, consisting of Cuthbert, Hamblett and Hensley then, Shelley was later added to the group in 2012 through the ninth series of British television music competition The X Factor, in which they finished fourth.