Banning the logos won't make any difference. Unless the box is totally standardised consumers will quickly find a way to differentiate between packs and select one they believe they prefer or have an affinity with.
Equally, as they have in the past, cigarette manufacturers would find subtle ways to trigger brand associations (like Silk Cut did with their use of purple silk).
Studies have shown that warnings on packs have no impact on the level of craving smokers feel when they see a pack - I'm not talking about what respondents claim, I'm referring to brain image data. So there's no reason to believe that logo free packs would reduce the appeal of the cigarettes they contain.
The powerful associations with smoking have been created through established advertising and, perhaps more importantly, the occasions (and especially the first few occasions) when smoking takes place: smoking is sociability, relaxation, bonding, freedom and rebellion far more than it is the brand logo itself.
I should add that I am vehemently anti-smoking and would support any move that genuinely reduced the appeal of these anti-social death-sticks. There are ways to achieve this but governments prefer the bold gestures rather than an effective approach.
Philip Graves (Consumer Behaviour Consultant)