The UK government is preparing to change course over the role of Huawei in its 5G telecoms network.
Six months after agreeing it could have a limited role, ministers look set to exclude the Chinese company, with no new equipment installed from next year.
The move is in part a result of pressure from Washington.
However, the precise time frame and details of the phase-out will be crucial in determining how the decision is received.
In January, after a lengthy delays and hard-fought battles, the government announced that Huawei would be kept out of the sensitive core of the 5G network and limited to 35% market share of its other parts.
But now it finds itself revisiting that decision.
A key reason is the Trump administration has continued what one UK official calls a campaign of “unrelenting pressure” on the company.
US officials have claimed China could use the firm as a gateway to “spy, steal or attack” the UK – Huawei denies this and its founder has said he would rather shut the company down than do anything to damage its clients.
New sanctions in May limited Huawei’s access to US chip technology.
That forced the UK’s National Cyber Security Centre to launch a review to understand whether using alternative chips would reduce the level of assurance it could offer about Huawei’s presence in the UK.