The UK’s mobile operators have already taken steps to remove Huawei components from the cores of their 4G networks. But the first deployments of 5G also run across 4G infrastructure.

Given the lack of compatibility between different vendors’ 4G and 5G equipment, a ban on Huawei participating in the 5G rollout means operators would also have to remove its equipment from the non-core of their 4G networks. Telecom analysts estimate that a total ban could push back the rollout of 5G in the UK by several years.

The government has previously indicated it would be willing to allow the firm to operate in the non-core parts of the 5G network. The government might hope that such a move would show the US that it was willing to listen to its demands, without also souring relations with Beijing.