Northumbrian MP Ian Lavery has claimed mocking people with strong regional accents is the last form of acceptable discrimination.

The Labour MP for Blyth and Ashington joined fellow MPs railing against those who look down on people because of how they speak, during a debate in Parliament.

Jo Platt, the Labour MP for Leigh and Atherton, led the Westminster Hall debate on regional accents and social mobility, explaining the pressure on people to change the way they speak in order to progress in life.

The debate came as Andy Burnham, who was born in Merseyside and raised in Culcheth near Warrington, is about to become the prime minister.

Burnham has proposed a programme of devolution, including setting up a No 10 North, and MPs said the UK should also regain its pride in the cultural depth of regional accents.

Lavery said his accent was from the coal mines and showed who he was, where he was from and who he represented, but highlighted how there was still a stigma attached to strong accents by employers, forming a barrier for working class children.

“Many people are forced between maintaining an accent they’re proud of or indeed ditching their accent to try to just even move on in life,” he said.

“It’s just not right – it’s the last form of acceptable discrimination in this country and it’s absolutely ridiculous.”

He added: “It’s the one that we suffer from the most – the social markers, the local dialect, who you are, and where you should be in life, because of how you speak.”

Such accent bias can hold people back, agreed Platt, who said: “Long before we explain our politics, our profession, or our background, the moment we open our mouths our accents instantly signal a core part of who we are.”

Platt said these barriers are not spoken about enough, saying that as a working class woman from Salford, she had also felt pressure to speak with a more neutral accent.

“I will admit there was a time when I wondered if softening my accent might make me sound more credible, more professional, more ‘Westminster’,” she said, adding: “I worried that the way I spoke would limit my prospects so I toned my accent down.”

Cat Eccles, the Labour MP for Stourbridge, said Black Country accents were frequently mocked and judged for a lack of sophistication, despite being one of the oldest and most historically well-preserved accents in the UK.

“I remember my parents and teachers discouraging my accent due to biases and stigma, leading to beliefs that I could face discrimination or be seen as inferior in the working world,” she said.

“We’re not inferior for how we speak and nor should we hide it.”

Marie Goldman, Lib Dem MP for Chelmsford and spokesperson for women and equalities, said that growing up in Devon, teachers told her to tone down her West Country accent for Bible readings.

She added: “My parents have always said ‘tuth’ rather than tooth and I remember being mocked about that, so I now say tooth, I’m slightly ashamed to say, because I corrected my accent.”

Conservative Mims Davies, the MP for East Grinstead and Uckfield and also the shadow Welsh Secretary, chimed in to say her father was a Sussex farmer and her mother was from Stoke but had elocution lessons.

“The rise of mass education and accent correction in favour of perceived better pronunciation has had an impact, otherwise I would be speaking more akin to the West Country accent and using the rhotic R, ” she said.

The former social mobility minister said she believed not having the right accent was still too often a barrier to progress, adding: “A regional accent must never be seen as a badge of shame.”

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