The reasons for the increasing use of guideline daily amounts labelling were outlined by Jane Holdsworth.
She has worked as a consultant with some of the largest food companies, and is the guideline daily amount campaign director for the Food Drink Federation.
She said the GDA scheme was developed in response to increasing demand from consumers to be able to make an informed choice about what they were eating and the trend towards healthier lifestyles.
Since the scheme was launched it has been adopted by 50 companies, many of them food manufacturers, but also including eight major retailers and Brakes within the foodservice industry.
Holdsworth said that studies carried out in Tesco showed that consumers did switch to healthier options when the scheme was implemented on its sandwiches. She said the next step for the GDA scheme would be raising awareness and seeking greater support from the food industry.