Declan Joseph Oliver 'Dec' Donnelly is an English television presenter and actor, best known as one half of the English acting and TV presenting duo Ant & Dec, with the other being Anthony McPartlin.
Donnelly came to prominence in the children's drama series Byker Grove and as one half of the pop music duo PJ & Duncan.
Since then, Donnelly and McPartlin have had a very successful career as television presenters, currently presenting I'm a Celebrity...Get Me Out of Here! since 2002, Ant & Dec's Saturday Night Takeaway since 2002, Britain's Got Talent since 2007 and Text Santa since 2011.
Before then, the duo presented other ITV entertainment series such as PokerFace, Push the Button, Pop Idol and Red or Black?.