When does Mum become Mam?

[NoEffingWay]

I'm in the midlands, and it's definitely Mum here but I can't work out where it becomes 'Mam'. Is it all over the UK, or is there a crossover somewhere near Sheffield?

Not inciting a north-south debate here, I'm genuinely interested in linguistics!

Definitely 'Mam' here - South Yorkshire

Mam in Durham, Tyneside, Northumberland.
Though I know plenty of people from there who use Mum. I went to independent school in the North East and very quickly learned to say Mum because I got laughed at for saying Mam.

when you move to Manchester - baby’s first words - mamamere

I am from the East Midlands, my Mum always calls her Mum, Mam. I've always said Mum

Not for me - Northumberland - mum

Live on the edge of Teesside and it's predominantly Mam, but I say Mum as do a few others, but we've all got parents who moved to the area from other areas where Mum is predominant.

I was 6 and have an 'odd' accent I'm told, or as one customer told me in a country pub I worked "Neither nowt nor summat" it's a mish mash of what I grew up hearing I suppose, London/Southern accent at home and North Yorkshire/Teesside everywhere else.

DD is born and bred here, and calls me Mum, but refers to me as Mam when not talking to me 🤷🏼‍♀️

Having a NE family but having been born and raised in the midlands/ south I do the opposite. I talk about my mum but I call her Mam.

Northumberland - mam

Was hoping someone would mention 'muh'. I grew up in Bristol calling my mum that and it drove her mad, but she was from London 😆

Not all parts of Nothern England say 'mam'. The part of North Yorkshire I'm from always say 'mum'. Same for Cumbria

I'm from west Yorkshire and it's mum round here. I've always associated mam with the NE in England, so Middlesbrough upwards.

Mom here is the West Midlands. My mum was always Mum to me and my kids called me Mum until they went to school and Mom crept in...I get a mix from them now. I tend to call Mum "my mom" when talking about her.
Devon friend says Mother for his and when asking about mine. Friend in South Shields is definitely a Mam.

The Mum v Mam thing in the North is often (but not always) a class signifier. The middle class friends I grew up with tease me mercilessly for saying Mam (all in good humour of course!).

DH’s family are from Cumbria and Sunderland and they all say “Mam”.

South Yorkshire, always Mam. However, somewhere along the passage of time I started referring to her as my Mum. Perhaps a bit of social conditioning at play. She died when I was eighteen and I loved calling her Mam when we spoke to each other.

Teesside here, definitely mam. Might be something to do with the docks maybe, possibly.

My partner’s mam is a mum, from Cheshire, and I find it genuinely problematic switching between the two.

I live in Newcastle, there's an element of geography and class in it too I'd say up here. More upmarket places are mum, poorer areas mam. I'm in camp 'mam' so I'm not being judgemental - it's observation. I went from a first school in a very poor area to a middle school 3 miles away, but might as well have been 100 tbh with the financial divide, I'd never heard anyone use mum, suddenly it was everyone but me.

It's Mam in Cumbria, or at least it is in Westmorland/ the Eden Valley at the East side of the county. I'm not sure about the Lake District side, it might be Mum there because of more incomers...

I grew up in the East Midlands and I say mum but both my parents (from the same place as each other and me) said Mam so I think it’s also generational.

Mum/Maw in west Scotland

My dc call me mama, fairly common among our friends, adults still call me that. We've lived in multiple cities and continents... but I'm from London

My mother was from Nottinghamshire and said Mam but I think there are generational and class differences at play : she was working class born in 40s, but all my cousins also in Nottinghamshire say Mum (born 70s, middle class)

Me too!

Sheffield.

Yes, very much (hard).working class.