
The ads, which run across outdoor from today, ask consumers to spot the difference between two amusing images, with the only difference being that one is sugar free.
Barr Soft Drinks hope that the advertising will illustrate to consumers that the drink still has ‘the same refreshing taste' as normal IRN-BRU.
New look cans and bottles of Diet IRN-BRU will also be available in supermarkets and newsagents to coincide with the launch of the ad campaign.