Sir; I support The Grocer's Weigh It Up campaign, in my position as Liberal Democrat Shadow Secretary of State for Health, to secure a review of the methodology used in the Nutrient Profiling Model, which is being used by Ofcom to determine which products cannot be advertised to the under-16s.

It seems crazy that foods such as manuka honey, raisins, Marmite, cheese and most cereals are effectively listed as junk foods, while chicken nuggets, diet colas etc survive.