By Jess Jones Defence company BAE Systems is planning to invest £220m to transform its Rochester base into an “advanced technology” factory. The century-old site, which specialises in aerospace technologies and electronic systems, will be revamped into a “state-of-the-art” 32,000sqm facility. BAE Systems expects the bigger and “more efficient” factory will create 300 jobs over the next five years on top of the current 1,600 Rochester-based employees. “Our skilled workforce plays a vital role in delivering products that are of the utmost importance to national security and commercial aviation,”…