The UK Government’s controversial Welfare Bill cleared a major parliamentary hurdle on Tuesday, but not without sparking a political firestorm in Wales, where opposition parties lambasted Welsh Labour MPs for backing reforms critics say will disproportionately harm the nation’s most vulnerable.

Twenty-five Welsh Labour MPs voted in favour of the Welfare Reform Bill, despite mounting criticism from opposition leaders and disability campaigners. The legislation, which includes sweeping changes to Universal Credit and Personal Independence Payments (PIP), is estimated to push 150,000 people into poverty across the UK—even after last-minute amendments.

Liberal Democrats Slam ‘Zombie Bill’

Welsh Liberal Democrat Westminster Spokesperson David Chadwick MP condemned the bill as “a shambles” and accused Labour of “nodding through” legislation that dismantles critical support systems.

“The shambles we have seen from Labour show a government that’s lost control,” said Chadwick. “This failed bill should be scrapped altogether.”

Chadwick further criticised the decision of Welsh Labour MPs to back cuts to benefits, calling PIP “a lifeline” rather than a luxury.

“By voting these changes through, Welsh Labour MPs have chosen to withdraw vital support from vulnerable people,” he said. “Wales, with higher rates of long-term illness, will be among the hardest hit.”

Plaid Cymru: First Minister Has ‘No Issue’ with Two-Tier Welfare

Plaid Cymru leader Rhun ap Iorwerth MS was equally scathing, focusing criticism on First Minister Eluned Morgan, accusing her of having “no idea” of the reforms’ impact on Wales and failing to condemn her party’s MPs.

“Today, Members of Parliament will be voting on Starmer’s cruel reforms to welfare,” said ap Iorwerth. “Disappointingly, only a handful of Labour MPs who represent our communities have opposed them.”

The Plaid leader said Morgan’s welcome of “concessions” to the bill—announced during her speech to the Welsh Labour Conference over the weekend—amounted to an endorsement of a “two-tier system” that would leave Welsh citizens worse off.

“So in welcoming them, can we assume that the First Minister has carried out a new impact assessment?” he asked. “If she hasn’t, why is her support so unqualified when she has no idea of the harms the reforms will cause?”

Plaid Cymru is calling the reforms an attack on disabled people and long-term ill patients in Wales, warning the £470 million economic impact could deepen inequality.

Tensions Within Labour

The vote exposed deep divisions within Labour. Over 100 Labour MPs across the UK reportedly opposed the bill, but only five of them represented Welsh constituencies. This internal rift has added to growing questions about Labour’s direction and its unity on welfare and social justice.

While UK Labour leadership argues the reforms are necessary to ensure the sustainability of the welfare system, critics say the government is prioritising political optics over genuine support for disadvantaged communities.

A Divided Future

The bill’s passage may be seen as a tactical victory for the UK Government, but it risks alienating swathes of the Welsh electorate ahead of the 2026 Senedd elections.

“Welsh Labour MPs who backed the proposals… will need to explain why they have done so to the people of Wales,” Chadwick warned.

Meanwhile, Plaid Cymru hopes the discontent will strengthen its call for a government “based on principle, not polling,” presenting itself as the party of community-driven renewal.