In snub to U.S., Britain will allow Huawei in 5G networks

That's a stupid move. Bringing in Huawei is enabling the communist party's tentacles into the UK. Stupid incompetant PM.

Perhaps this move will get SS7 fixed and real end-to-end encryption for all cell calls on capable devices?

Naw. That would never happen.

I think this was a big mistake, China is run by just one big communist machine. I am sure there are a lot of good Chinese poeple but I just cannot trust the government and top companies

Well, punishment for Britain would be inevitable. Formally, the intelligence sharing would not break, I guess. The British however will probably start feeling the "exchange rate" for all intelligence to suffer adversely from this financially motivated decision.

It's all about money.

If the Johnson regime had any guts, they'd stop trading with China and the US.

China is run by just one big communist machine. I am sure there are a lot of good Chinese poeple but I just cannot trust the government and top companies

Not many do. Chinese people are normal people like you and I, but are ruled by an authoritarian regime which has nothing to do with the ideology of communism.