from Mark Grice, MD, Catalina Marketing UK

Sir; I was interested to read that Sainsbury is to roll out in-store TV to its convenience network (‘Does in-store media work in c-stores’, January 21, p40).
There are still significant doubts over the effectiveness and payback of this expensive medium. Tesco has, after all, delayed further roll-out.
There are several factors working against the new digital channels. The channels are competing against a huge amount of promotional noise. There is no guarantee that the attention of customers on a convenience mission will be