The retailers are falling lower ahead of UK retail sales figures due to be released on Thursday. Supergroup, Dixons Retail and Home Retail are among the worst performers, with Supergroup falling over 8%.Regus is leading the risers after withdrawing its offer for MWB Business Exchange earlier this week.Infrastructure investment company HICL Infrastructure is lower after acquiring an interest in the South Ayrshire Schools Public Private Partnerships project from subsidiaries of Carillion, Lloyds Banking Group and Cyril Sweett Group for £15.75m. Miners Ferrexpo, Talvivaara and Aquarius Platinum are tracking metals prices downwards.---BCFTSE 250 - RisersRegus (RGU) 111.00p +2.78%Senior (SNR) 162.40p +2.33%Spectris (SXS) 1,581.00p +2.07%Fenner (FENR) 394.00p +1.57%Barratt Developments (BDEV) 112.20p +1.45%Telecity Group (TCY) 549.00p +1.39%Yule Catto & Co (YULC) 225.70p +1.30%JD Sports Fashion (JD.) 925.00p +1.26%Premier Foods (PFD) 28.27p +1.04%Grainger (GRI) 126.80p +1.04%FTSE 250 - FallersSupergroup (SGP) 802.00p -8.34%ITE Group (ITE) 220.00p -7.68%Keller Group (KLR) 505.00p -4.36%Ferrexpo (FXPO) 438.80p -3.98%International Personal Finance (IPF) 360.10p -3.54%Talvivaara Mining Company (TALV) 426.40p -3.20%Dixons Retail (DXNS) 17.19p -2.94%Aquarius Platinum Ltd. (AQP) 314.80p -2.87%Home Retail Group (HOME) 169.80p -2.80%Gem Diamonds Ltd. (DI) (GEMD) 264.60p -2.79%