The Foreign Office summoned the British acting high commissioner in Islamabad on Friday and handed over a demarche, expressing serious concern over the incident and seeking action against those involved, sources said.

The protest was staged by Pakistan Tehreek-e-Insaf (PTI) supporters two days ago.

A video shared on PTI London’s official X account showed participants chanting slogans against the army chief, with one speaker allegedly issuing threats suggesting he should be killed in a car bomb attack.

In the written protest, Pakistan said British soil had been used to incite violence against a serving Field Marshal of the Pakistan Army, describing the act as unacceptable and dangerous, the sources added.

Islamabad urged the UK government to investigate the matter and take action against what it termed “mischievous elements.”

The Foreign Office emphasised that freedom of expression should not be used as a cover for threats of violence or hate speech, and expressed the expectation that the UK would uphold its laws to prevent such acts, they added.