After they left Byker Grove, they turned their hand to pop music, releasing (under their Byker Grove character names "PJ & Duncan") songs such as Why Me?, Our Radio Rocks and The Monkees cover Stepping Stone. Their most famous hit was the BRIT Award nominated Let's Get Ready to Rhumble which included the infamous lyric "Watch us wreck the mic, watch us wreck the mic, watch us wreck the mic. Psyche!".
The duo never had a number one hit in the UK, even their World Cup 2002 song "We're On The Ball" reached number three, ironically beaten by Will Young who was on the show Pop Idol which the duo presented.
However across seas in Japan the duo's song "Eternal Love," was number one for several weeks as well many other singles and all three of their albums. Success also struck in Germany and many other EU countries.
Ant and Dec were also successful with the hits "When I Fall In Love" in 1996 and "Fallin'" in 1997, which achieved greatest success in South East Asia.
Taken from Wikipedia.