Jeremy Corbyn has 12 months to turn around the Labour’s Party’s dire poll ratings, two of his closest allies have said.

Diane Abbott, the shadow Home Secretary, and Ken Livingstone, the former mayor of London, both insisted that the Labour leader will “close the polling gap” within one year.

Mr Livingstone said that Mr Corbyn’s allies will “all be worried” if there is not an improvement, amid growing concerns that the party faces electoral annihilation at the next general election.