The Labour Party
The shadow chancellor said the party was "ready to serve, ready to lead, ready to rebuild Britain".
"When I stepped down we were only a handful of points behind the Labour Party."
The BBC presenter challenged the Labour leader over the five "national missions" he is announcing today.
The new prime minister suggested northerners didn't work as hard as people in London.
The Labour leader and his deputy had pledged to resign if they were handed fixed penalty notices.
The Labour leader introduced himself to party members and the public in a high-stakes speech in Brighton.
Exclusive: Labour leader let rip in weekly meeting of his frontbenchers.