Nick Hewer, the presenter of Countdown, has said he will no longer vote Labour in protest against the abuse suffered by colleague Rachel Riley, who has been an outspoken critic of the party's antisemitism crisis.
Ms Riley has been the target of abuse by far-left activists on Twitter in recent months, which began when she shared a video condemning antisemitism in football in December.

The presenter, who is Jewish, said she was then confronted with “weird and aggressive posts about Israel and Zionists”, sharing a number of posts which sought to compare the Israeli state with the Nazis.