Charlie was never happy in Busted

Charlie Simpson has admitted that he was never happy during his time in Busted.

The singer, who is now fronting Fightstar, worried that he had made a huge mistake after signing his record deal.

"I remember hoping I hadn't done something stupid," Charlie told The Mirror.

Simpson added that he reached his lowest moment while on tour with the group in Germany.

"I sat in my room thinking I can't do this anymore," he revealed.