Labour's ruling National Executive Committee has rejected calls to commit the party to a confirmatory referendum on any Brexit deal.
The party's manifesto for next month's European Parliament elections will stick to the wording of a motion passed by Labour conference last year, which keeps a Scottish Labour activists pile pressure on Corbyn and Leonard over People's Vote on the table as a last option.
A party source made clear that this committed Jeremy Corbyn's Labour to back a fresh vote only if the party cannot win either the changes it wants to Theresa May's Withdrawal Agreement or secure a general election.
Deputy leader Tom Watson, who has led calls for a more positive commitment to a People's Vote, left the six-hour meeting without comment, saying only that the manifesto would be published early next week.
Watson had earlier walked out of a shadow cabinet meeting after being told it would not be shown the proposed wording of the manifesto commitment.
Scottish Labour activists pile pressure on Corbyn and Leonard over People's Vote
Some 115 MPs and MEPs signed a letter to NEC members organised by the Love Socialism, Hate Brexit group urging them to explicitly back a referendum in the manifesto.
And 34 of Labour's 70 candidates in the May 23 European elections have pledged to campaign for a referendum and then back Remain if a vote is called.
A Labour source said: "The NEC agreed the manifesto which will be fully in line with Labour's existing policy - to support Labour's alternative plan, and if we can't get the necessary changes to the Government's deal, or a general election, to back the option of a public vote."
