SIR Keir Starmer could face the biggest parliamentary revolt since the Iraq war as MPs vote on welfare cuts the government’s own figures say will push 150,000 into poverty by 2030 tomorrow.

No 10 was accused of “total desperation” as furious Labour rebels vowed to vote down the Universal Credit and Personal Independence Bill.

Celebrities joined disabled activists as they staged protests outside Parliament and across the country today against the plans to create a “two-tier” welfare system.

Disabled People Against Cuts co-founder Linda Burnip told the Morning Star: “We are very much against the paltry concessions that have been made which actually don't seem to going to protect anyone. 

“It smacks to me of total desperation, they are just flopping around changing things from one day to another.

“We are obviously not being bought off by the concessions and protests will continue and we will make sure that any Labour MPs that vote in favour of this Bill don’t get back into the Parliament at the next election.”

Martin Cavanagh, president of the Public and Commercial Services union which represents Department for Work and Pensions (DWP) workers, said: “Yesterday’s inspiring protest outside Parliament sent a strong message to Keir Starmer, Liz Kendall and the Labour government. 

“These cruel cuts will devastate communities and ruin lives, while doing nothing to get people back into work or increase economic growth.

“People up and down the country are furious at these benefits cuts, which will plunge hundreds of thousands into poverty. 

“Billions in tax go uncollected every year due to tax evasion and avoidance by large corporations, landlords and the super-rich. Let them — and not some of the most vulnerable in our society — shoulder the burden.”

Work and Pensions Secretary Liz Kendall announced last week that changes to the personal independence payment (Pip) will only apply to new claimants from November 2026.

Ministers also rowed back on plans to cut the health-related element of universal credit after 126 Labour MPs signed an amendment that would have effectively killed the government’s Bill.

But DWP modelling published today showed that around 150,000 people will still be pushed into poverty by 2030 as a result of the cuts.

Ms Kendall told the Commons that the changes to the government reforms will cost “around £2.5 billion in 2029/30” as she promised a review of the Pip scheme “will be co-produced with disabled people.”

Former human rights barrister and current PM Sir Keir Starmer, meanwhile, faced further humiliation as an expert legal opinion warned the welfare reforms will “result in very serious breaches” of international human rights law.

Published today, the legal opinion by Jamie Burton KC of Doughty Street Chambers said that “the aggressive measures set out in the government's proposals will inevitably result in very serious breaches of the UK’s obligations” under international law and treaties to which we are party.

“They are likely to be condemned by the treaty monitoring bodies, who have become all too familiar with very similar reforms designed to cut the welfare bill and promote work, but which ultimately result in yet further and long-standing human rights violations for disabled people,” added the opinion which was commissioned by performing arts union Equity.

A total of 126 rebel Labour MPs signed a “reasoned amendment” which would have halted the Bill, but concessions have seen that withdrawn, with its author Dame Meg Hillier saying she is now satisfied with the legislation.

But many other MPs have vowed to vote against it. It would need almost all to do so to compare with the 139 Labour MPs who voted against the Iraq war.

The Greens and the Independent Alliance have also pledged to vote against.

Former Labour leader Jeremy Corbyn slammed the proposals for the “two-tier benefits system” saying they “will still push hundreds of thousands of people into poverty.”

Labour MP for Leeds East Richard Burgon said: “Despite the changes, over 400,000 disabled people — our constituents — will be denied Pip from next year, even tough they would currently qualify.”

Salford Labour MP Rebecca Long Bailey said: “We should not accept a system that entrenches inequality or leaves people behind.”

The DWP said: “The Secretary of State has carefully considered, and will continue to consider, all her legal obligations and is satisfied that these reforms are lawful.”