Housebuilder Bellway's shares have fallen slightly after it said uncertainty surrounding the new government's fiscal policy has resulted in a slight reduction in visitor site visits and weekly sales rates.Oil stocks Salamander Energy and Dana Petroleum and oil pipeline supplier Wellstream Holdings are under pressure despite strength in the oil price. Pork products supplier Cranswick is lower on the same day the Office of National Statistics said a fall in pork product prices contributed to a decrease in the rate of inflation in May.FTSE 250 - RisersImagination Technologies (IMG) 288.00p +6.43%Domino Printing (DNO) 438.60p +5.94%PZ Cussons (PZC) 327.50p +5.82%SThree (STHR) 299.50p +4.87%Laird (LRD) 123.60p +4.75%Grainger (GRI) 113.10p +4.72%Unite Group (UTG) 180.40p +4.70%Euromoney Institutional Investor (ERM) 615.00p +4.33%Sports Direct International (SPD) 100.90p +3.97%St James's Place (STJ) 239.30p +3.95%FTSE 250 - FallersBellway (BWY) 618.50p -2.60%Computacenter (CCC) 307.90p -2.22%Dunelm Group (DNLM) 342.80p -2.22%International Personal Finance (IPF) 208.40p -2.16%Salamander Energy (SMDR) 245.60p -2.03%Dana Petroleum (DNX) 1,083.00p -1.81%Wellstream Holdings (WSM) 546.50p -1.53%Cranswick (CWK) 860.00p -1.49%Soco International (SIA) 426.20p -1.48%St. Modwen Properties (SMP) 164.90p -1.43%