"Rolls-Royce plc, leader society in propulsion systems, announced today the economic results for first six months. Group Highlights • Order book increased by £2bn to a record £57.5bn (2008 year-end £55.5bn). • Group revenues increased to £5,142m (2008 first-half £4,049m). Revenues on an underlying basis increased by 17 per cent to £4,923m. • Services revenues increased by eight per cent to...