One Direction star Niall Horan has admitted that he sometimes gets overwhelmed when playing big gigs.

The boyband have performed at numerous massive venues over the last two years, including a number of shows at London's gigantic O2 Arena.

However, the singer told We Love Pop that he often gets flustered by playing gigs where there are a lot of fans. He said:

"I'm quite claustrophobic and I don't like everyone crowding around and shouting the same questions."

Horan continued: "I get a little bit scared sometimes. It's all good as we've got a good security team."

Next up on One Direction's tour schedule is Glasgow's 10,000+ capacity venue SECC.