A security review pledged by Prime Minister Boris Johnson into a Chinese takeover of one of Britain’s biggest microchip factories does not appear to have taken place, a UK parliamentary committee has said. Newport Wafer Fab (NWF), based in Wales, specialises in manufacturing the more advanced compound semiconductors, which is the key technology used in 5G networks and facial recognition software. In July 2021, Nexperia, a Dutch firm wholly owned by China’s Wingtech Technology, said it had obtained 100 percent ownership of NWF. Wingtech, whose shareholders include Chinese state-funded investors, supplies chips to Chinese smartphone makers, including Huawei. The planned takeover triggered national security concerns by MPs across the political spectrum, and the prime minister ordered national security adviser Sir Stephen Lovegrove to investigate the purchase. But the Foreign Affairs Committee of the House of Commons said on April 5 that the promised investigation does not appear to have begun. …