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!

I grew up in Wales and Mum was always mammy and then just mam as we got older.

I am in Yorkshire and I haven't heard it round here BUT I was reading some documents relating to a school nearby and it refers to "mam", I wonder if the author was from further north as its certainly Mam by Teeside, County Durham

Mammy/mami/mam in south (and north) Wales - also happens to be the Welsh word for mother.

Mam in Hull.

Agree with PP, it’s not common in a lot of Yorkshire but you’ll hear it from Teesside and north from there. I know plenty of people from the North East who say Mum though.

Mom in Birmingham 😊

My Teeside born friend says Mam but her parents immigrated from Ireland, so I think for her it's more due to heritage than geography.

Co. Durham is Mam by geography. Further south, I'd say not as a rule, IME.

Yeah it’s definitely Mom in Birmingham. Mum in Warwickshire. The only people I know who say Mam are Irish.

Same, I don’t know about England though. Also language travels with people doesn’t it?

Bit far away so probably not helpful, but Cornwall is Mum. And definitely West Devon, not sure about the rest.

The very Cornish often use Mother. This can be for their own mother, or their kid's mother, or anyone else's mother and/or wife that they might be talking to or about.

Peak District here and use mum, but my late DM who was born and bred here referred to her stepmother as Mam. Maybe changing as the years roll on?

North East is Mam. I've a friend in his 40s who's started saying Mum. Just sounds wrong.

It's mam in Ireland and mummy/mum in Northern Ireland but changes gradually around the border counties. It's an interesting question!

Mammy here in south wales.
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From what I understand the proliferation of tiktok/instagram/youtube has homogenised language to a degree so there have been some changes in the language used. We also tend to travel/live in different towns more so we have less defined boundaries. Apart from my family who tend to live and die within a five mile radius!

Mum in London and South East, never heard anyone hailing from the locality use Mam or Mom. Always thought it was mom in midlands and Mam up North ?

I was in the west midlands and said Mom, now in south I say mum. Mam i classed as far more north, definitely in Manchester and Liverpool and further northern

I’m from West Yorkshire originally and it was always mum growing up but I do know some people who say mam in Leeds.

My Welsh friends say Mam. My Dad is "old scouse" - growing up in Liverpool in the 60s and he called his mother "Mam" as did my mother who grew up in Manchester . I grew up in Liverpool in the 80s and everyone I knew referred to their mother as "me mum" or "me ma" 🤣

My dad says “mam” and we’re East Midlands. Nobody else I know says it though.

Mam popular here in Manchester but my mum hates it so I am banned from using it.

Mam or Ma in the Outer Hebrides

It's Mum in Bristol, although some say Ma (but with the Bristolian accent it sounds like Muh. )

Definitely Mam in Newcastle/Northumberland.

Mam/Mammy in South Wales, unless you're one of those who don't want their children growing up with a Welsh accent. Before I get slated, I know quite a few like this.