Zachary Sami P Lichman, commonly known as Ziggy and also Zac or Zach, (Born 5 January 1981 in Camden, London) is a former member of the boy band Northern Line (1998–2000) and music producer from North London. He has appeared as a contestant on television shows such as Five Go Dating on E4 and the 2007 edition of Big Brother in the United Kingdom.
Before Northern Line existed, his first band was called Tantrum, in which he played with Eastenders actress Rita Simons and Duncan James.
He was educated at the University College School and is an alumnus of the Haberdashers' Aske's Boys' School. He made an appearance on the E4 show Dead Set as himself.
Ziggy is now managing Lucien Laviscount from Celebrity Big Brother 2011, living in West Hampstead.