Thursday broker round-up UPDATE

BAE Systems: Investec downgrades from hold to sell with a target price of 430p.British Sky Broadcasting: Credit Suisse ups target price from 600p to 630p and reiterates an underperform rating.Cobham: Investec lowers target price from 290p to 280p and stays with its reduce rating.Consort Medical: Numis reduces target price from 1120p to 910p downgrading from buy to hold.Countrywide: Beaufort upgrades to buy.Dechra Pharmaceuticals: Jefferies initiates with a target price of 871p and a buy recommendation.Ferrum Crescent: Beaufort downgrades to hold.Go-Ahead Group: Panmure Gordon raises target price from 2500p to 2900p maintaining its buy recommendation.Halma: Liberum Capital initiates with a target price of 600p and a hold recommendation.Lekoil: Morgan Stanley moves target price from 95p to 105p retaining an overweight rating.Mattioli Woods: N+1 Singer raises target price from 394p to 470p upgrading from hold to buy.Ophir Energy: Westhouse Securities shifts target price from 245p to 250p keeping an add rating.Polymetal: Credit Suisse ups target price from 520p to 550p and upgrades to neutral.RPS Group: JP Morgan cuts target price from 311p to 263p and keeps a neutral rating.UBM: Berenberg reduces target price from 670p to 580p, while leaving its hold recommendation unchanged.Xaar: FinnCap places both its target price (prev.: 450p) and its hold recommendation under review. Halma Xaar BAE Systems Ferrexpo