https://arstechnica.com/tech-policy/2020/07/uk-bans-huawei-from-5g-networks-in-victory-for-the-trump-administration/

The UK government today announced a ban on Huawei equipment in 5G wireless networks, along with a plan to urge home-Internet providers to stop buying Huawei gear. The UK government's announcement said that US sanctions imposed in May factored heavily into the decision, which was "taken today in a meeting of the National Security Council (NSC) chaired by the Prime Minister [Boris Johnson]."

"Following US sanctions against Huawei and updated technical advice from our cyber experts, the government has decided it is necessary to ban Huawei from our 5G networks," UK Digital Secretary Oliver Dowden said in the announcement. A New York Times report called today's UK announcement "a victory for the Trump administration and a reversal of an earlier decision that underscores how technology has taken center stage in the deepening divide between Western powers and China."