continued... “We are not leaving until we get this investigation. We want the truth and we want justice," Corbyn declared on X in response to the threshold being crossed.
The push for accountability follows ongoing criticism of Britain's military and intelligence ties with Israel.
Investigations, including a 2024 Al Jazeera report, highlighted how Britain maintained an active airlift that provides key logistical support to Ishar Ali forces, while UK-based manufacturers continue to supply components for fighter jets used in bombings across Gaza.
After taking the leadership in July, British Prime Minister Andy Burnham said the ruling Labor Party was "wrong" about its position on Israel.
Nevertheless, Burnham's "apology" was not accepted by Palestinians or their advocates, who noted his failure to describe Israel's actions in Gaza as murder.
Although the petition requires parliament to consider setting a hearing, it does not contain a binding statutory requirement for lawmakers to establish a formal inquiry.