Her decision to pull out of the contest came after she failed to secure any union or affiliate backing, although she secured 23 nominations from MPs, which allowed her to enter the latest phase of the contest.
She also said in the video: “The Labour party will need to select a candidate who can unite all parts of our movement, the union movement, members and elected representatives. And I have to also be honest with myself, as I said I always would be throughout this campaign.
“At this time, that person is not me. In order to win the country, we are going to have to find a candidate, in this race, who can do all of that, and then take that message out to the country.”
She added: “I want to say to those people: this is not the end. It’s the beginning.”