Election 2015: Vernon Coaker on Labour Trident policy

Labour's shadow defence secretary Vernon Coaker has said his party is committed to renewing four Trident submarines if it wins the election.

In a Daily Politics election debate on defence and security, he said evidence showed four boats were needed.

In March, Shadow Chancellor Ed Balls said the party would consider reducing the number to three.

Defence Secretary Michael Fallon refused to say whether his party would back a Labour minority government on Trident renewal.

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