https://www.cnet.com/news/huawei-leak-uk-defence-secretary-sacked-gavin-williamson/

The decision to use Huawei equipment to build the UK's 5G infrastructure is far from straightforward. In February, the UK's  Government Communications Headquarters chief criticized Huawei, saying it poses security threats from the Chinese government. The US has continually warned its allies about security concerns with Huawei, and last August the Australian government banned Huawei in 5G deployments.

Speaking to Parliament on Thursday, the government said the matter is "closed" and would not refer it to the police. But Labour deputy leader Tom Watson pointed out that "the prime minister has sacked the secretary of state for Defence because she believes there is compelling evidence he has committed a crime" and questioned how the government could block a criminal investigation.