Inmarsat: Citi downgrades to hold from buy.Inmarsat: Morgan Stanley downgrades to underweight from neutral.Imperial Tobbacco: Investec retains buy.Carnival: Credit Suisse confirms neutral rating and 2,357p target.Drax: Credit Suisse cuts target from 400p to 350p, underperform rating maintained.Rio Tinto: Credit Suisse retains outperform recommendation and 6,000p target price, keeping the stock on its 'Focus List'.Legal & General: UBS reduces target to 95p from 114p, retains neutral recommendation.Centrica: Nomura reiterates neutral rating and 370p target.TalkTalk: Evolution Securities reiterates buy rating but cuts target from 190p to 185p.Informa: UBS keeps buy rating, target upped from 460p to 520p.Cove Energy: UBS stays with buy, raises target from 115p to 125p.Polo Resources: Evolution Securities keeps buy rating but lowers target from 8p to 6p.Aberdeen Asset Management: Singer Capital Markets cuts target from 275p to 260p, buy rating maintained.IQE: Singer Capital Market initiates coverage with buy rating and 41p target.RSM Tenon: FinnCap upgrades to buyEndace: Panmure Gordon retains buy, but reduces target slightly from 517p to 513p.T. Clarke: Panmure Gordon cuts target from 85p to 50p, keeps hold rating.