** Next dives off a record hit Weds on cautiousoutlook for 2015-16
** Stock, down 5.2 pct, poised for biggest one-day dropsince Sept 2012, easily the top faller on FTSE 100 &most actively traded stock on index
** Says while GB consumer economy looks benign, somecollections not as strong as this point last yr & faces toughcomps vs last yr when sales boosted by unusually warm weather
** Blue-chip peer Marks & Spencer down 0.1 pct (RM: tricia.wright1.thomsonreuters.com@reuters.net)