UPDATE: Wednesday broker round-up

GlaxoSmithKline: Credit Suisse ups target from 1,310p to 1,340p, neutral rating kept.BHP Billiton: Credit Suisse reiterates outperform recommendation and 2,800p target.Standard Chartered: Credit Suisse keeps underperform rating and 1,400p target.Diageo: Nomura maintains neutral stance and 1,320p target.GKN: Nomura reiterates buy rating and 240p target.GKN: Evolution Securities maintains buy stance and 330p target.BSkyB: Evolution Securities keeps buy rating and 750p target.National Grid: Investec downgrades from hold to sell, keeps 547p target.SABMiller: Investec keeps buy recommendation and 2,475p target.Cobham: Evolution Securities upgrades from reduce to neutral, 165p target kept.Home Retail: Investec puts hold rating and 100p target under review.Bowleven: Evolution Securities cuts target from 225p to 190p, buy rating kept.William Hill: Evolution Securities reiterates buy recommendation and 285p target.