The former X Factor finalist alerted fans to his illness as he embarked on an 11,000-mile journey back to the UK.

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> One Direction's Niall Horan: 'Simon Cowell doesn't pay us enough'
Horan wrote on his Twitter page: "Not feeling the best! sore all over! under the weather as they say!"
The Irish singer later added to his page on the micro-blogging website: "Food poisining not good! (sic)"

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Horan appeared to be planning a good few days of rest following One Direction's recent promotional activity, telling his followers he'd be spending ample time in his bed and writing: "Yessss! Back in london! Sleep for the next week, don't wana see a sole."
He also joked with fellow X Factor alumna Alexandra Burke, adding: "ari alex..whats crackin? since im gona be soo tired n jetlagged when im home..ur gona havta help me out hahahaha. i joke... Yes burkey, we're back, I cannot wait t sleep."
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Watch One Direction's performance at the Logie Awards in Australia below:
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