Lucky Strike and Dunhill maker British American Tobacco (BAT) has insisted it will deliver solid full-year earnings growth, despite flagging a currency hit. The group said if foreign exchange rates remain the same for the rest of the year, it will impact operating profits by 8% for the first half and 6% for the full year. BAT added it will continue to pump in "significantly increased" investment into alternative products, such as e-cigarettes. As previously announced, it expects revenues from so-called next-generation products to double this year to "substantially" more than £1 billion.