Victorious Burnham makes his pitch to the country

Andy Burnham celebrates his victory in the Makerfield by-election but Sir Keir Starmer insists he won't "walk away" from No10.

A senior Labour MP tells the World at One that it's time for the Prime Minister to leave, and we hear from voters in Makerfield.

Also: UK national borrowing rose sharply in May. We'll ask a former Treasury official what it means.