Stephens joined the wine supplier in 1994 as a sales representative. His roles have included national account manager and business unit manager for leisure.
He reports to Bradley who joined the company in 1990 and was sales director for the UK and Ireland from December 1999. Meanwhile, Mike Novy, who was the regional sales director for western Europe, becomes vice-president for sales and marketing for Louis Martini and Napa Valley Vineyards, based in the US.
The company said that Bradley would retain hands-on involvement in the UK business.
The promotions are part of a reshuffle following the promotion of Tamara Minick-Scokalo to vice-president, general manager, for Europe earlier this year.