"Bath" and "Barth" - where in England does it change?

[FairyPenguin]

I know people in Bedford and Northampton who all say "Barth". I met someone from Leicester and she says "Bath". Leicester isn't that far away from Northampton.

Whereabouts in the country does the pronunciation change?

Near Warwick here - say bath, flat vowel.

Grew up in Coventry - it's bath (rhymes with the American math).

Now live in Somerset where it's quite clearly Barth.

I like confusing annoying people so if I was going about my ablutions in the relevant city, I would be taking a bath (short a) in Ba(r)th.

Well I'm from the black country so its baff here

Where I am it's Baaath - long a but not ar.

DH is from the midlands and it's short a for him.

somewhere around Leighton Buzzard I think

Does the person saying Barth also have a plumb in their mouth because this narrows it down a bit.
Or do they just pronounce it Barth.

Anyway I'm from thNorth west, an I say bath pronouncing the th not ff as some do round here.

no plum it is just barth

Birmingham - I'd have a bath ~ to rhyme with Math(s)
Same as there's no 'r' in castle
or glass

All have a short 'a' sound, as in 'hat'

while I would say glarse and carstle

I'm a mancuniun living near Bath so if I am winding my (southern) children up I say Bath (short a) but if i am chatting generally I have been here long enough for it naturally to have evolved to Barth

I from Hampshire and say Barth but now live in Leicester where they say bath.

I'm from south Oxon living in Birmingham so 'baath' dh is a Brummell so 'bath' - poor ds doesn't know whether he's coming or going and alternates betwixt the two

In South Wales it is Baath. For the town and the tub.

DH (Midlands) is deeply confused and says both

At Gloucester Rugby ground where they are great rivals with Bath it often sounds like "Borth" from the fans!

In Gloucester it is Barth

Nottingham - say bath to rhyme with math too.

I'm in Nottingham and it's bath with a short a here. My friend is from Wiltshire and now lives up here and is amazed at the difference in pronounciations for quite a few words.

Interesting discussion here....all Welsh. Newport Welsh no 'r' sound as in Bath, Valleys Welsh a definite 'r' sound. Who knew?

I live in Kent
Barth like Martha

It's not barth in bath it's baath
I say Barth because I went to a posh school and my dad is posh but the local accent is baath

London - Barth, parth, carstle, glarss, grarss

Everyone I know from London, South East, South seem to add the 'r' sound. Everyone from south west, west and north no 'r'. Well in general from the people I know and hear, I'm sure there's variants.

I never thought about this until dd1 went into reception. Her teacher was from somewhere else and said bath (math). Do I correct dd1, do I not? In the event I went for "oh some people pronounce it like blah blah" but I wasn't sure what to do.