Lamprell is the hardest faller after two of its contract customers have allowed options on wind turbine installation vessels to lapse.Curtains and bedding retailer Dunelm is not far behind following a fall in half year like-for-like sales after a tough run up to Christmas.In a brief statement issued on Thursday morning telecoms titan Cable & Wireless said that it continues to trade in line with expectations, cheering investors.Balfour Beatty is higher after being awarded a $350m contract to build and refurbish four US Air Force bases. Shares of housebuilder Redrow fell even though it posted a first half profit after making a loss the same time a year earlier.Also lower is bookmaker Ladbrokes despite ramping up profits by 20% in 2010.FTSE 250 - RisersElementis (ELM) 138.00p +6.89%Cable & Wireless Communications (CWC) 47.74p +4.42%Taylor Wimpey (TW.) 38.46p +3.86%Mitie Group (MTO) 207.50p +3.75%Hiscox Ltd. (HSX) 392.50p +3.29%Big Yellow Group (BYG) 319.10p +3.14%International Personal Finance (IPF) 335.80p +3.10%Cable & Wireless Worldwide (CW.) 75.75p +2.99%Millennium & Copthorne Hotels (MLC) 601.50p +2.91%Logica (LOG) 147.00p +2.87%FTSE 250 - FallersLamprell (LAM) 281.10p -5.89%Talvivaara Mining Company (TALV) 572.00p -5.53%Dunelm Group (DNLM) 435.00p -5.21%SIG (SHI) 127.90p -4.27%Morgan Crucible Co (MGCR) 287.30p -3.91%Sportingbet (SBT) 46.85p -3.40%Supergroup (SGP) 1,660.00p -3.38%Heritage Oil (HOIL) 292.50p -3.31%Meggitt (MGGT) 346.30p -3.21%QinetiQ Group (QQ.) 127.10p -3.05%