This means she will now also oversee marketing activities across Kallo Foods and organic brand Whole Earth, as well as Clipper.
Hesketh's promotion follows Wessanen's acquisition of Clipper Teas, the organic and Fairtrade tea brand, in March.
She will now head up marketing plans across the three brands, along with having responsibility for new product development.
Prior to joining Clipper in 2007, Hesketh was global marketing manager at Bacardi. She has also previously held roles at GSK-owned Lucozade.
As part of the restructure, Elaine Underwood, the former marketing director of Kallo and Whole Earth, is to leave the business.
A further change is Alan Bird, previously commercial director of Kalo Foods, being appointed commercial director across the group.Follow @johnreynolds10