Actually funnily enough Cadbury’s changed the labelling on their chocolate bars and replaced the imperial measurements listing to comply with EU regulations on metric labelling of ingredients.
They agreed with Trading Standards they could keep the image from their branding as it was a marketing image indicative of the raw ingredients. So although I was being flippant, it wasn’t such a dumb example. It’s perfectly normal practice for food manufacturers to show idealised versions of their raw ingredients. The actual ingredients list for Cadbury Dairy Milk lists it as *the equivalent of 426ml of fresh liquid milk in every 227g bar. Equivalent of could be anything. It could be milk powder which would be very different to what they show in their marketing. Legally as long as the actual ingredients list is correct it’s fine.