Tuesday broker round-up

Dignity: N+1 Brewin upgrades to add, target raised from 880p to 950p.Diploma: Jefferies reiterates buy rating and 510p target.Elementis: N+1 Brewin upgrades to buy, target upped from 220p to 230p.EnQuest: HSBC upgrades to overweight, target lifted from 135p to 143p.Faroe Petroleum: Nomura raises target from 209p to 216p, buy rating kept.Fidessa: Merchant Securities cuts target from 1,950p to 1,700p, buy rating kept.GKN: Jefferies maintains buy rating and 220p target; Investec maintains buy rating and 245p target.Hammerson: UBS downgrades to neutral.Hiscox: Nomura ups target from 431p to 437p, reduce rating kept.HSBC: HB Markets downgrades to hold.ITV: Deutsche Bank downgrades to sell, target cut from 80p to 72p.Keller: Goldman Sachs ups target from 470p to 525p, neutral rating kept.London Mining: JP Morgan Cazenove cuts target from 390p to 280p, overweight rating kept.Man Group: Citigroup raises target from 80p to 90p, buy rating kept.National Grid: HB Markets initiates with sell rating.Ophir Energy: Nomura downgrades from buy to reduce, target lifted from 646p to 683p.Premier Oil: Nomura cuts target from 481p to 476p, reduce rating kept.Rotork: Investec puts target under review, hold rating kept.Sage: Peel Hunt downgrades to sell; UBS downgrades to neutral, target upped from 295p to 305p.Tullet Prebon: Numis upgrades to buy.Ultra Electronics: Investec keeps hold rating and 1,535p target.Weir: Numis upgrades to buy.Wolfson: Numis downgrades to hold, target cut from 250p to 210p.BC National Grid Man HSBC Holdings Keller Sage Group Diploma Weir Group Hammerson Rotork Elementis ITV Hiscox