Sadiq Khan says Sunak is "unfit" to be PM over a bet he made with Piers Morgan.The prime minister said on Tuesday he had been “taken by surprise” when Morgan had said to him during a TalkTV interview: “I’ll bet you £1,000 to a refugee charity you don’t get anybody on those planes before the election. Will you take that bet?”Sunak shook hands with Morgan on the wager and said he was “working incredibly hard to get the people on the planes”.