A.G.Barr p.l.c. provided earnings guidance for the six months ended June 28, 2013. For the period, the company anticipates half year sales revenue of £127.5 million, an increase of 4.9% over the prior year. Margins in the period have improved relative to last year, benefiting from the strong performance of new product development and innovation, less volatile input costs, modest improvements to pricing and improved efficiency of promotional investment.