Sir Keir Starmer is considering putting a motion to parliament on Wednesday over Labour’s position on the Israel-Hamas war.
The party has been divided over its approach to the conflict, with numerous backbenchers calling for a ceasefire.
But the leadership has stood by its own calls for so-called humanitarian pauses to allow aid and supplies to get into the Gaza Strip – with Sir Keir saying a ceasefire “always freezes any conflict in the state where it currently lies” and would leave Hamas with the capability to carry out more attacks.
The discord within Labour has been ramped up by the prospect of an SNP motion being presented to parliament on Wednesday, giving all MPs an opportunity to vote in favour of a ceasefire – if it is selected by the Speaker.
Such a vote could highlight the level of upset on Sir Keir’s backbenchers, with rumours even shadow ministers could rebel against Labour’s official position.
But now Sky News understands the leadership team are having discussions about putting their own motion to the House in a bid to maintain party unity.
Labour Party insiders also made it clear to Sky News’ political editor Beth Rigby that if frontbenchers defied the party position and voted with the SNP, they would have to stand down.
Ms Sultana also said she was “resigning” from the Labour Party after 14 years.
She was suspended as a Labour MP shortly after they came to power last summer for voting against the government maintaining the two-child benefit cap.
Several others from the left of the party, including Mr Corbyn, were also suspended for voting against the government, and also remained as independent MPs.
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However, Ms Sultana was still a member of the Labour Party – until now.
Mr Corbyn has previously said the independent MPs who were suspended from Labour would “come together” to provide an “alternative.
The other four are: Iqbal Mohamed, Shockat Adam, Ayoub Khan and Adnan Hussain.
Mr Corbyn and the other four independents have not said if they are part of the new party Ms Sultana announced.
In her announcement, Ms Sultana said she would vote to abolish the two-child benefit cap again and also voted against scrapping the winter fuel payment for most pensioners.
Ms Sultana also voted against the government’s welfare bill this week, which was heavily watered down as Sir Keir Starmer tried to prevent a major rebellion from his own MPs.
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On Wednesday, Ms Sultana spoke passionately against Palestine Action being proscribed as a terror organisation – but MPs eventually voted for it to be.
She said to proscribe it is “a deliberate distortion of the law to chill dissent, criminalise solidarity and suppress the truth”.
Ms Sultana said they were founding the new party because “Westminster is broken but the real crisis is deeper – just 50 families now own more wealth than half the UK population”.
She called Reform leader Nigel Farage “a billionaire-backed grifter” leading the polls “because Labour has completely failed to improve people’s lives.
Image: Ms Sultana called Nigel Farage a ‘billionaire-backed grifter’. Pic: PA
The MP, who has spoken passionately about Gaza, added: “Across the political establishment, from Farage to Starmer, they smear people of conscience trying to stop a genocide in Gaza as terrorists.
“But the truth is clear: this government is an active participant in genocide. And the British people oppose it.
“We are not going to take this anymore.”
A Labour Party spokesperson said: “In just 12 months, this Labour government has boosted wages, delivered an extra four million NHS appointments, opened 750 free breakfast clubs, secured three trade deals and four interest rate cuts lowering mortgage payments for millions.
“Only Labour can deliver the change needed to renew Britain.”