Labour leader Sir Keir Starmer is facing a high-profile revolt over his decision to back Boris Johnson’s EU trade deal in this week’s Commons vote.
Former shadow chancellor John McDonnell and ex-cabinet minister Ben Bradshaw are among the signatories to a letter calling on opposition parties not to support the “rotten” agreement, The Guardian reported.
Sir Keir has said that he will call on Labour MPs to support the “thin” post-Brexit free trade agreement, despite misgivings that it would fail to protect many key economic sectors.
He argued, however, that the alternative of ending the Brexit transition period on December 31 without a deal in place would be even worse for the economy.
However, his stance has upset some pro-Europeans in the party who say they should not support a flawed agreement and should abstain instead.
The statement has been organised by Another Europe is Possible and Labour for a Socialist Europe – both on the left – but has attracted support from both wings of the party.
As well as Bradshaw, the paper said the signatories included ex-cabinet minister Lord Adonis from the Blairite wing of the party.
From the left, McDonnell is joined by another former shadow cabinet minister Clive Lewis.
The statement warns that it is the duty of the opposition to provide proper parliamentary scrutiny and to set out an alternative.
“That task gets harder if opposition parties fall into the trap of rallying around this rotten deal,” it said.
“We are witnessing an act of vandalism against our livelihoods, our rights and our horizons.
“We call on Labour, the Labour movement and other opposition parties not to support the Tories’ Brexit deal when it is put to a vote in the House of Commons.”
Other signatories are said to include former MEPs, councillors and local activists.
Labour is alone among the opposition parties in saying it will support the deal – with the SNP and the Liberal Democrats having said they will vote against it.