Workspace Group, the business premises provider, was rising high on the news it has secured planning permission to redevelop its Canary Wharf business park. The group will replace existing light industrial space at its Poplar Business Park with a mix of business centre, apartment accommodation and some new light industrial.Film and television content company Entertainment One climbed after it said it enjoyed a strong first half with earnings significantly higher than the comparative period and it remains confident that full-year figures will be in line with management expectations.Meanwhile, Drax, Premier Farnell, Kentz, Oxford Instruments, Playtech, Redrow and Bovis Homes were all trading lower after going ex-dividend today.Balfour Beatty, the construction group, was lower despite winning its second major contract in as many months to build student accommodation in the US. FTSE 250 - RisersWorkspace Group (WKP) 433.10p +4.44%Greencore Group (GNC) 145.90p +4.21%Ocado Group (OCDO) 393.60p +3.31%Amlin (AML) 414.10p +3.27%Cairn Energy (CNE) 265.00p +2.16%Hays (HAS) 115.10p +2.04%Daejan Holdings (DJAN) 3,786.00p +2.02%Spirent Communications (SPT) 129.40p +1.73%Greene King (GNK) 807.00p +1.70%Savills (SVS) 616.00p +1.65%FTSE 250 - FallersPolymetal International (POLY) 660.00p -2.51%Murray International Trust (MYI) 1,119.00p -2.19%Tullett Prebon (TLPR) 343.40p -2.14%Dairy Crest Group (DCG) 462.10p -2.06%Ashmore Group (ASHM) 387.80p -2.00%Man Group (EMG) 83.50p -2.00%TalkTalk Telecom Group (TALK) 247.30p -1.98%Afren (AFR) 140.00p -1.96%Betfair Group (BET) 1,049.00p -1.87%Close Brothers Group (CBG) 1,168.00p -1.77%NR