And he's meant to be the sensible one *tsks*. 

The One Directioner has apologised after posing for a photograph 360ft up on a balcony ledge outside of his home when celebrating bandmate Zayn Malik's 21st birthday in London over the weekend.

A friend who was at the party posted the photograph on his Twitter feed but it has since been deleted, and the 20-year-old star posted an apology on the site on Tuesday night, describing his actions as "stupid and irresponsible".

UPDATE: Perez Hilton has since managed to get his mitts on the deleted photos, they can be viewed here.

He wrote: "You may have seen a photo of me today taken on top of a building. I regret being there and having a photo taken. It was a stupid and irresponsible thing to do. I am sorry, and do not endorse any fans trying to repeat this, as it is extremely dangerous."

After the photograph surfaced on the site, many of the band's loyal fans were worried sick and asked him to stop acting the monkey on his balcony. One follower tweeted: "That photo of @Real_Liam_Payne on that balcony really gave me a mini heart attack ... please don't do that again! (sic) Another fan wrote: "@Real_Liam_Payne but please don't ever do that again we don't want anything bad happen to you ok we love you so much. (sic)"

It has been suggested that drink may have been taken on the night when Liam climbed on to the ledge, apparently to take a photograph of the view with a new mobile phone...

Liam also urged fans not to convene outside his apartment block after many copped on where he lived from the balcony photograph, and other pictures taken on the night by friends.

He posted: "I'd just like to be able to walk outside as everyone does and enjoy time with my friends, not feel bad for not wanting to take a picture. Sorry if I've been rude to anyone but I've come to realise if I take one picture more people keep coming everyday... hope everyone's good. (sic)"

Sounds like Liam's living on the edge. Apologies.