Lose the Lads' Mags campaign group has called for the Co-operative to stop stocking the magazines altogether, after it issued a deadline for publishers to 'cover' them up.
Sophie Bennett, a spokeswoman for the campaign said:
Thousands of people have called on retailers to stop selling lads' mags like Nuts and Zoo.
The Co-operative's actions show our voices are being heard. Yet the Co-operative are attempting to sell their customers short.
The so-called 'modesty bags' they are demanding from publishers are designed to allow the Co-operative to continue profiting from sexist, harmful lads' mags - but just a bit more discreetly. That's not what corporate social responsibility looks like.
More top news
A man standing trial accused of murdering two pensioners has been found hanging in his prison cell, police say.
Malaysia Airlines' website has been hacked by a group proclaiming support for the so-called Islamic State.
Prince Philip has been awarded a knighthood by Australia - sparking a political row in the country.