Andy Tuscher, Northern Director at EEF, the manufacturers' organisation, said: "Manufacturers have begun the year in positive mood, maintaining the solid activity trends seen during the second half of last year. With separate data showing a further improvement in manufacturing activity across the euro zone, this supports our forecast for UK manufacturing output to grow by 2.7% this year, the fastest rate of expansion in four years. Some doubts will persist, however, over the durability of this upturn given the ongoing weakness in investment spending and concerns over the impact of high energy costs across the sector."