UK government orders investigation into Nvidia’s $40bn Arm takeover

Culture secretary cites competition and national security concerns over Cambridge-based chip designer

The UK government has stepped in to order an investigation of Nvidia's $40bn takeover of the Cambridge-based chip designer Arm, citing potential national security concerns.

Oliver Dowden, the UK culture secretary, has written to the Competition and Markets Authority (CMA) instructing it to begin a phase one" investigation into the deal, which was announced in September.