https://www.theguardian.com/technology/2019/apr/24/may-to-ban-huawei-from-supplying-core-parts-of-uk-5g-network

Telecoms firm will still be able to supply some technology, but decision may anger Beijing

Theresa May has ordered that Chinese telecoms supplier Huawei be banned from supplying core parts of the future 5G mobile phone network, following a meeting of ministers on the National Security Council (NSC).