A spokesman for Ken Livingstone said: "Boris Johnson lost his temper because he lost the debate - he talked about cable cars, not cutting fares and the squeeze on Londoners."
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British Bankers' Association head Anthony Browne warned that some banks could be moving abroad within weeks due to Brexit uncertainty.
Labour said its plan would mean grieving families would not have to pay for either a burial plot or cremation for a child aged under 16.
The children are among around 70 new young arrivals to arrive in Britain under the landmark Dubs amendment.