Caroline Wilson Palow, legal director of the campaign group Privacy International, said the new order might be “just as big a threat to worldwide security and privacy” as the old one.

She said: “If Apple breaks end-to-end encryption for the UK, it breaks it for everyone. The resulting vulnerability can be exploited by hostile states, criminals, and other bad actors the world over.”

Apple made a complaint to the Investigatory Powers Tribunal over the original demand, backed by a parallel legal challenge from Privacy International and Liberty, another campaign group. That case was due to be heard early next year, but the new order may restart the legal process.

TCNs are issued under the UK Investigatory Powers Act, which the government maintains is needed by law enforcement to investigate terrorism and child sexual abuse.

Key figures in Donald Trump’s administration, including vice-president JD Vance and director of national intelligence Tulsi Gabbard, had pressured the UK to retract the January TCN. President Donald Trump has likened the UK’s request to Chinese state surveillance.