The new-look design will include a new look logo, packaging, point of sale and fleet livery for the company.

Richard Hayes, marketing director, Warburtons said, "Smith & Milton will use their proven creativity to refresh our brand identity and range design, to communicate our superior quality and drive category growth in combination with our new advertising and product innovation."

Last month Warburtons announced it is to enter a new category with the launch of a range of "premium" snacks. Available from 15 March, the range will comprise lines including ChippidyDooDaa Pitta Chips and SnackaDoodle wholegrain snacks.