A Plaid Cymru motion is set to challenge Welsh Labour loyalties lay with their party or with the people of Wales following a scathing backbench letter criticising the UK Labour Prime Minister for rolling back on devolution.

This comes after a letter to Keir Starmer from eleven Labour Senedd backbenchers, criticising the Labour Prime Minister for rolling back the existing devolution settlement, which they describe as ‘deeply insensitive’ and a ‘constitutional outrage’.

A program of contention which has sparked the current debate is Pride in Place. This program allows the UK Government to invest in devolved policy fields through the controversial UK Internal Market Act, and therefore undermining the democratic mandate of the Senedd and the Welsh Government.

Plaid Cymru say that if Labour fail to support the motion, they will prove once and for all that they prioritise Keir Starmer and party unity before the needs of the people of Wales, showing that they have officially given up on Wales.

Plaid Cymru leader, Rhun ap Iorwerth MS, said:“When Labour MSs themselves are protesting at ministers in London making decisions over Wales’ head, it’s clear something is going very wrong.

“It’s time that that Labour in Wales to decide what is more important to them - defending Keir Starmer to satisfy their own party, or standing up for Wales.

“After 26 years of Labour leading Government in Wales, we now have a UK Labour Government holding Wales back, from the HS2 missing billions, to the Crown Estate, and powers over policing and justice.

“This is about making sure that Wales has a voice and that decisions for Wales are being made in Wales, not in Westminster.

“Labour have clearly given up on Wales. On 7 May 2026, people across Wales will have a chance to vote for new leadership that will stand up for Wales with Plaid Cymru.”