Burberrys: Alpha Value upgrades to ´reduce´ from ´sell.BG Group: Alpha Value downgrades to ´add´ from ´buy´.Johnson Matthey: UBS upgrades ´to ´buy´ from ´neutral´, cuts target to 1915p from 2150p. AZ Electronic Mat.: UBS keeps at ´buy´, cuts target to 300p fropm 310p.Close Brothers: UBS keeps at ´neutral´, lifts target to 730p from 700p. Croda: Credit Suisse keeps at ´buy´, lowers target to 2085p from 2220p. Aberdeen Asset Management: RBS maintains at ´hold´with price target at £1.9.BG Group: Goldman Sachs upgrades to ´Conviction buy´. Johnson Matthey: JP Morgan Cazenove upgrades to ´overweight´.Johnson Matthey: UBS upgrades to 'buy'.AB