Sugar and sweeteners company Tate & Lyle said currency movements, in particular the stronger US dollar, will benefit its reported performance in the final quarter.Underlying trading in the quarter has been consistent with expectations, the group added.Performance at the Ingredients businesses in the Americas and Europe has also been in line with forecasts, while margins in the EU sugar operations have remained consistent with those achieved in the third quarter.Sucralose has continued to deliver volume growth at lower average selling prices.Net debt at 31 March is anticipated to be broadly similar to the £864m reported at 31 December 2009.