Specialist healthcare group BTG rose strongly after saying it expects full-year sales to be at the top end of guidance after a 'transformational year'.Revenues for the financial year to March 31st are expected to be at the upper end of the £275-285m guidance range, which the company had reiterated as recently as January. This is up from £234m the year before. Homeware retailer Dunelm also gained after total revenue for the third quarter grew nearly 10%. The company said that with opportunities to expand its portfolio it is confident in its growth prospects.Specialist healthcare group BTG was in demand after saying it expects full-year sales to be at the top end of the guidance after a "transformational year". Revenues for the financial year to March 31st are expected to be at the upper end of the £275-285m guidance range, up from £234m the year before.Meanwhile, Polymetal and Vedanta tracked the price of copper firmly lower, which fell sharply after China's new modest sized stimulus package fell short of bigger expectations. St.Modwen Properties declines after major shareholder Clarke and Leavesley sold a 3.75% stake, equal to 8.3m shares at 380p each. FTSE 250 - RisersITE Group (ITE) 206.80p +9.13%Just Retirement Group (JRG) 145.50p +5.36%Imagination Technologies Group (IMG) 223.70p +4.92%Oxford Instruments (OXIG) 1,342.00p +4.68%International Personal Finance (IPF) 551.00p +3.96%JD Sports Fashion (JD.) 1,700.00p +3.66%Dunelm Group (DNLM) 1,003.00p +3.24%Crest Nicholson Holdings (CRST) 414.60p +2.88%Centamin (DI) (CEY) 53.50p +2.88%Intermediate Capital Group (ICP) 459.60p +2.16%FTSE 250 - FallersPolymetal International (POLY) 609.00p -4.55%Domino Printing Sciences (DNO) 768.00p -4.30%Infinis Energy (INFI) 226.50p -3.82%St. Modwen Properties (SMP) 385.00p -3.02%Supergroup (SGP) 1,659.00p -2.98%Vedanta Resources (VED) 898.00p -2.71%Evraz (EVR) 76.00p -2.63%Telecity Group (TCY) 694.00p -2.32%Aveva Group (AVV) 2,030.00p -2.31%Catlin Group Ltd. (CGL) 510.00p -2.11%NR