https://www.theguardian.com/technology/2020/jan/23/government-hints-huawei-given-role-uk-5g-network

No 10 source says it would not be viable to exclude Chinese firm despite US warnings

The government has hinted strongly that it will allow the Chinese firm Huawei at least some role in the UK’s 5G mobile network, despite warnings from the US that doing so could compromise security.