Ironically the UK let Huawei to build and run it’s most secure networks it even has access to the doughnut.

https://www.telegraph.co.uk/technology/2018/02/20/uk-cyber-s...

This is despite multiple failures including the inability to verify the source code and binaries that end up running on the hardware that is supplied, operated and managed by Huawei.

https://assets.publishing.service.gov.uk/government/uploads/...

(Page 15 is a gem so are many others).