Tuesday broker round-up

(ShareCast News) - Dairy Crest: Jefferies downgrades to underperform with a target price of 500p.Royal Dutch Shell: HSBC reiterates buy with a 2360p target.Polymetal: Jefferies stays at underperform with a 700p target.Tesco: Credit Suisse reiterates underperform with a 130p target.Paddy Power Betfair: Goldman Sachs keeps at overweight with a 115p target.Standard Chartered: UBS upgrades to neutral with a target price of 620p.Vedanta: Credit Suisse downgrades to underperform with a target price of 670p.Aveva: UBS upgrades to buy with a 2030p target.Astrazeneca: Deutsche Bank reiterates buy with a target price of 6000p.British American Tobacco: Jefferies keeps at buy with a 5700p target.Pearson: Societe Generale upgrades to buy with a 1030p target. Astrazeneca Tesco Pearson Standard Chartered British American Tobacco