Tate & Lyle alert on £11m currency hit

However, the Splenda sweetener maker, which had three profit warnings in 2007, said trading in recent months was continuing in line with expectations.

In the year ended 31 March, second-half profits had been "broadly similar" to the £117 million in the first six months, it said. The company has been trying to diversify away from commodity sugar into more technologically advanced products.