A Labour MP threatening to topple Keir Starmer has challenged a Cabinet member to move against the PM on live TV. Catherine West urged Education Secretary Bridget Phillipson to put herself forward and bring down the Prime Minister in a dramatic moment in a BBC studio. Earlier Ms Phillipson had dismissed Ms West's bold challenge after the backbencher called on the Cabinet to pick a new leader by Monday. On Saturday Ms West dramatically put Cabinet members "on notice" that if they do not topple