It is still not clear what the new hybrid nutrition labelling scheme is supposed to look like, according to the chair of the UK Food & Drink Federation's health and wellbeing group.

Richard Evans, who is also president of PepsiCo in the UK & Ireland, told just-food that there continues to be uncertainty in the food industry over the precise design of the front-of-pack (FOP) labelling scheme.

Late last year, the Department of Health proposed to introduce a 'hybrid' system that will combine traffic light-style colour coding with the guideline daily amounts information currently used widely by food producers and processors.

The new scheme, which will continue to be voluntary, is set to be introduced in the summer of 2013.

"People still need to be clear what we are changing to," Evans told just-food on the sidelines of the Food & Drink Federation's 'delivering healthy growth' event in London this week. "We still don't know exactly what the nature of the scheme is."

Attempts to introduce a hybrid FOP nutrition label are likely to be met with some resistance.

Several retailers already use traffic light colours to indicate high, medium or low salt, fat and sugar content on packs of private-label food and drink, but some retailers and many producers favour labels based purely on guideline daily amounts (GDA).

GDAs have been in widespread use for several years in the UK.

In his speech to conference-goers this week, Evans said that "FOP labelling is something that all companies will take very seriously into account" in 2013.