Open for business?

THE “Silicon Fen” of tech firms on the outskirts of Cambridge is less glamorous than the California cluster after which it is nicknamed, but it has nonetheless produced some stars. The brightest of them is ARM Holdings, whose microchips power cars, drones and most of the world’s smartphones. This week’s announcement that ARM would be bought by SoftBank, a Japanese tech giant, was hailed by Britain’s new government as evidence that the country is still “open for business” following last month’s decision to leave the European Union.