Seeming to lend the lie to those stories that it was about to sell the attractive business to Rockwell International Inc, GEC Plc has announced that it will invest UKP100m to expand the CMOS lines at GEC Plessey Semiconductors Ltd in Roborough, near Plymouth, Devon. The expansion will create 150 new jobs, quadruple capacity at the plant by expanding clean room space to 30,000 square feet from 10,000, and moving production to 8 from 6 wafers; it could double the firm’s annual turnover the company to over $600m in three years. GEC Plessey Semiconductors is a front-runner to make the AToM single chip Asynchronous Transfer Mode interface controller that Cambridge-based Advanced Telecommunications Modules Ltd has developed.