Jones has been a member of the party for 24 years, but in an open letter published in The Guardian, the columnist announced he would be leaving, underlining party leader Keir Starmer’s pro-Israel stance.

“We all have political red lines: mine is supporting what would amount to war crimes against innocent civilians, toddlers and newborn babies among them, then gaslighting the public over doing so,” Jones wrote, referring to Starmer declaring that Israel’ had a “right” to cut off energy and water to Palestinian civilians.