We had some ‘Durham Early’ Cabbages growing over the winter and while a few got damaged to greater or lesser extents by slugs/snails, a couple got through unscathed including this one, which weighed in at about 4lb.
Of course this is a long way from the world record of over 10 stone (see the link below) but we were pretty pleased with ours.
http://www.guinnessworldrecords.com/world-records/heaviest-cabbage