Three senior personnel have been made redundant as a result, including commercial director for UK and Ireland Neil Barker, marketing director Richard Trimby and commercial director for continental Europe Stuart Pickles.
A spokeswoman said three business units have been created.
“One will focus on the key markets in mainland Europe, one on the specific needs of the Nordic Monopolies and one on the UK and Ireland,” she said.
Dan Townsend, formerly managing director for Maison Louis Latour Agencies, has been appointed to the position of general manager for UK and Ireland. He will take up his new position on January 4, 2011.
Peter Jackson, managing director for Treasury Wine Estates EMEA, said: “This restructure will bring our marketing and commercial teams together into one focused business and will ensure that our customers and consumers have a dedicated approach in each of our key markets.
“Richard, Neil and Stuart have been instrumental in growing our business and ensuring that our portfolio of brands have maintained a stronghold over our key markets.
“This restructure hasn’t been taken lightly but I believe that our new structure will take our business and brands on to a whole new level.”
The Treasury Wine Estates portfolio includes brands such as Beringer, Penfolds, Lindemans, Chateau St Jean, Wolf Blass, Rosemount and Castello di Gabbiano.