London pre-open: Slight gains expected

Footsie is expected to rise slightly despite a lower finish on Wall Street last night.Building supplies group Wolseley said it expects profits for the year to 31 July 2010 to exceed analysts' expectations of £326m. However, it said the better than expected earnings will be due to improvements in cost efficiencies rather than any improvement in economic conditions.Reckitt Benckiser faces an investigation into sales of its Gaviscon heartburn medicines to the NHS after the OFT accused it of abusing its dominant market position. The OFT alleges that Reckitt Benckiser sought to restrict competition to its Gaviscon brand by withdrawing and de-listing its NHS packs of Gaviscon Original Liquid from the NHS prescription channel just before its patent ran out.Drax, operator of the UK's largest coal-fired power station, delivered a set of full year results ahead of market expectations, despite poor market conditions. Earnings before interest, tax, depreciation and amortisation (EBITDA) in 2009 were £355m, down from £454m in 2008 but ahead of market expectations of £341m.Lloyds Banking Group has issued a statement confirming that chief executive officer Eric Daniels will waive his right to a bonus for the second year in succession.