(ShareCast News) - Construction and support firm Carillion posted unchanged pre-tax profits for the first half of the year, in line with forecasts.The company posted first half pre-tax profit at £67.5m, unchanged from the first half of last year.While pre-tax profit was flat, underlying pre-tax profit was up by 11% to £84.5m from £75.9m.First half revenue was up 21% to £2.26bn from £1.87bn, which Carillion said reflected an "exceptional" volume of new contracts won in 2014. The company said it was on track to deliver full year revenue growth.Carillion said a drop in new first-half orders plus probable orders to £1.bn, from £3.2bn reflected the expected pause in public sector contract awards due to the UK General Election.At 0805 BST shares in Carillion were down by 0.75% to 330p.