Tuesday broker round-up - UPDATE

Lonmin: Goldman Sachs downgrades to sell from neutral.Antofagasta: Evolution Securities upgrades from sell to neutral, target cut from 1,200p to 1,110p.Standard Chartered: Evolution Securities maintains neutral rating and 1,800p target.Burberry: Merchant Securities keeps buy rating.Burberry: Nomura retains neutral stance and 1,356p target.ENRC: UBS cuts target from 1,000p to 950p, buy rating kept.Diageo: Nomura maintains neutral rating and 1,320p target.Premier Oil: Evolutions Securities maintains buy rating and 580p target.Glencore International: Credit Suisse reiterates outperform recommendation and 550p target.Aveva: Evolution Securities leaves buy stance and 2,300p target unchanged.Dixons Retail: Credit Suisse cuts target from 27p to 25p, outperform rating kept.Micro Focus: Panmure Gordon raises target from 405p to 425p, buy recommendation unchanged.Afren: Evolution Securities maintains buy rating and 210p target.Sepura: Evolution Securities reiterates add recommendation and 65p target. Burberry Standard Chartered Diageo Antofagasta