Angela Eagle says she is challenging Jeremy Corbyn for the Labour leadership in a bid to save her party.

Eagle told Peston on Sunday that Corbyn was "not a leader" and that she was the right person to lead Labour into the next election - which she said could come earlier than 2020.

The ex-shadow business secretary also said she believed Corbyn will have to get nominations to be on the ballot but the decision was down to the party's National Executive Committee.

Corbyn said he was "disappointed" by Eagle's leadership challenge and urged her to "think again".

He also said he expected to be automatically placed on the ballot of any contest.

Eagle, who recently quit as shadow business secretary, accused the current leader of "hiding behind a closed door" over calls for him to step down.

Corbyn earlier told the BBC's Andrew Marr Show that he had "reached out in a way no other leader has" in an attempt to unite all parts of the party.

Asked about Eagle's challenge, Corbyn said: "I'm disappointed, but obviously she is free to do that if she wishes to."

The 67-year-old said he had never considered stepping down, insisting "there's no wobbles, there's no stress, there's no depression" and that Labour was "going places" under his leadership.

In a message to his MPs, Corbyn said: "I urge them to think again about what they are doing at this present time."