Really formal people even with their closest family there always polite and just like professional even at home that’s just what I’ve noticed...
They tend to not like many comforts in my view like will just wear a thin jumper or shirt in the house and will wear jeans in the house which I could never do so uncomfy and no socks ever for some reason ... I
wear my tracky bottoms bed socks and dressing gown the minute I’m home

They tend to not over indulge too like have one cup of t or only one biscuit where as I would have like four cups of tea in a row and half a pack of biscuits

Ermmm they wear those green and tartan sort of coats which don’t look warm at all lol.
they don’t seem friendly with strangers but are with there own friends if that makes sense where as working class people I’ve noticed will chat to anyone an stuff...
They tend to dress down in a way like there children will wear very plain clothes an wear them a lot even tho they could afford more (that’s not a diss as I don’t condone waste just an observation that working class people tend to dress their kids in more of a variety an more fashionable)
All of those could be way off and are defo just my own experiences so I could be wrong but just my two cence

I am working class but used to work in a job with many posh people so just my own experience xx
But defo the queen type vibe is what I think of as posh.
Also I don’t think a lot of money makes you posh it can just make you rich but some rich people are posh because of how they act. I do think u need money to act posh tho I think!