Publishers of lads' magazines have until September 9 to start providing 'modesty' bags, or the Co-operative will not supply it in their stores.
Steve Murrells, retail chief executive for the Co-operative Group, said:
As a community-based retailer we have listened to the concerns of our customers and members, many of whom say they object to their children being able to see overt sexual images in our stores.
Whilst we have tried to mitigate the likelihood of young children seeing the images with a number of measures in-store, the most effective way of doing this is for these magazines to be put in individual, sealed modesty bags.
As an interim measure, we have introduced our own opaque screens on shelf to reinforce our existing policy limiting the display of such material.
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