An Ofcom adviser who accused Israel of genocide in Gaza and espoused “conspiratorial fantasies” about Jews should be removed from the broadcasting watchdog, campaigners have said.

Aaqil Ahmed posted on social media that the musician Paul Weller was “spot on” when he said “we cannot let genocide be a legitimate thing” during a Gig for Gaza concert last year.

The former head of religion at the BBC also wrote on X that Benjamin Netanyahu, the Israeli prime minister, had “hijacked” the Middle East and “every European capital”.

Mr Ahmed’s social media comments have resurfaced just days after Lord Grade, the Ofcom chairman, wrote to the BBC to say the regulator could step in if an internal inquiry into the making of a documentary about Gaza was not satisfactory.

The corporation removed the film Gaza: How to Survive A Warzone from iPlayer after it emerged the child narrator is the son of Ayman Alyazouri, who had worked as Hamas’s deputy minister of agriculture.