Investors have raised a glass to Mitchells and Butlers after the pub group said trading in the new financial year has remained strong, thanks to sales growth across the main brands, but cautioned that it is still cautious on the outlook for consumer spending.Tenanted pub group Punch Taverns is also higher.Spirax-Sarco, the steam valve and pump maker, is also higher after saying it expects pre-tax profits for 2009 to be above the top of the current range of analysts' forecasts.Aberdeen Asset Management is the heaviest faller in the FTSE 100 despite saying it had a 'successful' last three months of 2009, with gross new business wins more than 3½ times the figure for the fourth quarter of 2008.FTSE 250 - RisersMitchells & Butlers (MAB) 271.40p +7.57%Tullett Prebon (TLPR) 310.60p +5.15%Spirax-Sarco Engineering (SPX) 1,297.00p +5.02%Paragon Group Of Companies (PAG) 131.60p +4.20%Imagination Technologies (IMG) 277.00p +4.10%Ashtead Group (AHT) 88.15p +3.89%Mondi (MNDI) 374.50p +3.57%Punch Taverns (PUB) 73.50p +3.52%888 Holdings (888) 112.80p +3.49%Tomkins (TOMK) 213.50p +3.44%FTSE 250 - FallersAberdeen Asset Management (ADN) 133.50p -3.68%Lamprell (LAM) 196.10p -3.06%Interserve (IRV) 216.30p -1.86%Great Portland Estates (GPOR) 286.50p -1.75%Tate & Lyle (TATE) 411.50p -1.72%Renishaw (RSW) 570.50p -1.64%Debenhams (DEB) 76.80p -1.54%Forth Ports (FPT) 1,152.00p -1.54%ARM Holdings (ARM) 192.90p -1.43%F&C Commercial Property Trust (FCPT) 95.50p -1.34%