Ant and Dec prank 'Big Brother' winner

Ant & Dec have gone undercover to prank Big Brother winner Nadia Almada for the new series of their ITV show Saturday Night Takeaway.

As part of the prank, the duo set up 'Friday Fright Night', a spoof TV show where paranormal occurences are invesigated.

Ant played the part of Keith, a scaredy-cat cameraman with a terrible shaggy perm, and Dec was Vincent, the supposed medium and presenter of 'Friday Fright Night'.

The unsuspecting and "spooked out" celebrity guest Nadia was taken on a tour of an unlit Tudor building by Vincent and Keith.

The send-up will be seen this Saturday at 7.05pm on ITV1.