Former 'X Factor' winner Matt Cardle 'in rehab'

Matt Cardle has reportedly checked himself into rehab.

The 30-year-old singer - who shot to fame after winning 'The X Factor' in 2010 - is said to have signed up for a 28-day programme at The Priory rehabilitation centre in London last night after allegedly becoming hooked on prescription pills temazepam and Valium.