Charlie began pursuing a solo career after playing in Fightstar, a post-hardcore band which differs greatly from the sound of Busted. They formed a year prior to Busted's split. To-date they have released one EP and four albums: "They Liked You Better When You Were Dead", "Grand Unification", "One Day Son, This Will All Be Yours", "Be Human" and "Behind the Devil's Back", all being released in both the UK and the US. They have also released an album of b-sides and rarities, ""Alternate Endings"". Fightstar announced a hiatus at the beginning of 2010, stating that they were "taking some time off" to work on separate projects before regrouping to begin working a new record. After their 2014 reunion and 2015 album, Fightstar began to describe themselves as a "passion project" rather than a full-time band, as the members focus on other projects. Simpson released a solo acoustic album called "Young Pilgrim", which peaked at number 6 in the UK Albums Chart in 2011, followed by the 2014 album "Long Road Home".