A surge in LED traffic lights in Europe has helped UK firm Dialight increase its operating profits almost nine-fold from £0.6m in 2009 to £5.3m this year. Group revenues for the six months ended June 30 were £46.2m, up from £34.6m in 2009, while profit before tax was £5.2m (£0.5m in 2009). Sales of LED […]