https://www.theguardian.com/technology/2020/jul/05/boris-johnson-now-has-sound-reasons-to-keep-huawei-out-of-uk-5g

Former MI6 chief said US sanctions on Huawei meant Chinese telecoms firm now posed security risks to UK

Boris Johnson now has “sound technical reasons” to reverse his decision to allow the Chinese firm Huawei to play a role in building the UK’s 5G infrastructure, a former head of MI6 said on Sunday.