Jamie Dimon, the boss of America's largest bank says Britain needs to shape up or faces permanent decline as a financial hub. He's one of the big names who's not going to the Chancellor's Global Investment summit next week. So as Rachel Reeves meets UK bank CEOs this morning, our City Editor Katherine Griffiths explains what Labour's plans to revive the square mile are. Hosted by Lizzy Burden and Yuan Potts.

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