JLS

JLS (an initialism of Jack The Lad Swing) are an English boy band consisting of members J.B. Gill, Marvin Humes, Aston Merrygold and Oritsé Williams. They originally signed to Tracklacers production company New Track City and then went on to become runners-up of the fifth series of ITV reality talent show The X Factor in 2008, coming second to Alexandra Burke.

source: Wikipedia