(Wines&Vines) - Peter Byck, co-founder, president and CEO of Winery Exchange, a full-service provider of private-label wine, beer and spirit brands for retailers, told an audience of students, faculty and wine industry professionals at the University of California, Davis (UCD), last week that private-label wine brands comprise 50% of the retail wine market in the United Kingdom. While private-label wines may not grow to that level in the United States anytime soon (they currently total 5%), Byck believes the potential U.S. market could reach 25%.