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BBC The Traitors' Zack's life off screen with Big Brother star sibling who shot to fame years ago
Zack Davies is one of the 12 contestants taking part in the latest series of BBC One's The Traitors. What you mightn't know about him is he's the younger brother of a well-known former Big Brother contestant from the Channel 5 days. Matthew Davies, 32, was on series 15 of Big Brother in 2014.