Budvar UK chief executive Tony Jennings is to leave the company, M&C Report understands.
A source told M&C Report that Jennings has been put on gardening leave with immediate effect.
In its latest full year results, Budvar recorded sales and volume increases, but volumes growth in exports slowed after a strong 2013.
In January, Budvar appointed Simon George from Magners as its new sales director.
Budvar was unavailable for comment.
