Oh, the UK ignored US protectionism and arbitrary blocking of Chinese tech, because they have looked into the facts, and deemed it not so that magic masts with Chinese tech will (or can) siphon off our data to Dear Leader.
End of the day, Eriksson, Nokia etc. are playing catch up with Huawei, so why go for inferior and likely more expensive tech.
Use HTTPS for sites with sensitive data, VPNs and strong encryption when necessary, job done. Security issues are far deeper than China, and far deeper than 5G infrastructure.