One Direction star Niall Horan has revealed that his bandmates sometimes annoy each other.

The group have been active since forming on the X Factor in 2010 and it seems the lads haven't fallen out yet.

Speaking to We Love Pop, Horan said that the quintet are at a point where they know where to stop when it comes to joking with or irritating their bandmates.

However, it seems petty squabbles do break out whilst the boys are together. The Irishman said:

"We've got to the stage now where we know each other's boundaries. If there's an argument, it's over what's on the radio, or, 'Turn up the window, it's freezing'."

He continued: "Zayn has this thing about getting into the car at six o'clock in the morning and turning the window down. I'm like, 'Are you actually serious?!'."

One Direction meanwhile are currently on the UK leg of their Take Me Home world tour and are due to play in Glasgow tonight (April 12).