Pub groups are the star performers as they celebrate a victory over pressure group the Campaign For Real Ale (CAMRA) after the Office of Fair Trading found no evidence to support CAMRA's assertion that the beer tie arrangement inflates the price of a pint of beer by around 50p.Enterprise Inns and Punch Taverns are the major beneficiaries of the verdict, while the likes of Greene King and Marstons, both of which are less dependent on their pub estates because of their brewing interests, advance less briskly.Talvivaara Mining is lifting the industrial metals sector higher after the nickel and zinc producer said its upgraded crushing circuit has been successfully installed and commissioned.Telecom operator Colt Telecom is going well after it reported a 3.7% increase in quarterly EBITDA as revenue fell 4.9%.Among the fallers is transport and logistics group Stobart which today said it saw pre-tax profits rise to £12.4m in the six months to August 31 from £11m over the same period the previous year as turnover climbed to £218.2m from £199.2m.FTSE 250 - RisersEnterprise Inns (ETI) 140.20p +17.72%Punch Taverns (PUB) 96.35p +13.69%Talvivaara Mining Company (TALV) 403.80p +4.61%Robert Wiseman (RWD) 463.10p +3.53%Marston's (MARS) 93.90p +3.19%COLT Telecom Group S.A. (COLT) 128.00p +2.73%Cranswick (CWK) 689.00p +2.53%Carillion (CLLN) 299.30p +2.32%Greene King (GNK) 421.00p +2.11%Melrose Resources (MRS) 356.80p +1.94%FTSE 250 - FallersGame Group (GMG) 150.10p -4.39%Avis Europe (AVE) 30.40p -4.28%Imagination Technologies (IMG) 219.50p -4.23%Ferrexpo (FXPO) 161.00p -4.22%Bellway (BWY) 785.50p -3.62%ITV (ITV) 47.85p -3.49%Redrow (RDW) 152.50p -3.48%Barratt Developments (BDEV) 155.00p -3.31%Stobart Group (STOB) 122.90p -3.23%Charter International (CHTR) 686.50p -3.11%