From smartphones to internet of things, Cambridge-based chip designer remains at the heart of a new front in tech innovationThe smartphone revolution has transformed Arm Holdings into the UK’s leading technology company, but while the pace of change is now showing signs of slowing, Arm is not. Instead, the Cambridge-based company appears to be at the heart of a new front in technological innovation.Founded in a Cambridge barn 25 years ago, Arm is now worth almost £14bn. With its hi-tech focus and non-London base, it is the sort of company the government wants at the forefront of the country’s economy