It depends where you live

It also depends on that good old British tradition of the class system.

Dinner = evening meal
Tea = evening meal
Pudding = pudding
Going to London = going to London from anywhere
Butty = sandwich, with or without a lid (Yorks and Lancs influence)
Piece = sandwich, with or without a lid (Scottish influence)

I call the evening meal dinner, but really posh people always call it supper.

Supper, to me is cheese and crackers or toast and tea.

I also say pudding, not sweet or dessert.

Or Cheese on Toast when you come in after a night out (supper that is)

Haven't heard 'sweet' used for many years!

Supper is a late evening snack to me.

Butty = sandwich - I think 'sarnie' is a southern expression.

I always thought sarnie was a liverpudlian expression.

Think you may be right, Merlot. in Yorkshire it used to be called a butty, and chip butties were in high demand ( by me anyway.)

We call the evening meal dinner but if we have guests we call it supper or they might be expecting something a bit grand.

I'm a nesh southerner and I didn't have a chip butty until I married DH.

I could eat one right now.

What's a chip butty?

There are so many of these differences:

Daps/plimsolls/pumps.
Lavatory/ toilet/loo/bog.
Hall/vestibule.
When my very Brummy landlady told me to leave my bags in the vestibule when I first went up to uni, I had no idea at all what she was talking about!!

We say lunch for the middle of the day; dinner for evening meal. Tea is something you have in the middle of the afternoon with cake; and supper is a very naughty snack before you go to bed.

I was very confused when someone I knew referred their hall as 'the lobby'.

High tea is an early evening cooked meal followed by cakes etc.

Baffies /slippers
Larder/pantry
Cakehole/mouth
Sofa/settee

At least she didn't call it the foyer, Ana

Please don't forget Netties ( toilets )

A chip butty is a sandwich, presumably with buttered bread, which has as a filling some chips. I have never had one but would be nice.They would have to be the big greasy chips you get at the fish and chip shop.

I hate the very idea of a chip butty. Too much starch and stodge.

I also hate the idea of a fish finger butty, although I believe they're popular as well!

Dinner - evening meal
Tea - afternoon drink with or without cake
High tea - what my relatives gave us in the late afternoon when I first came to Yorkshire
Pudding - Pudding
Going up to London - going to London from anywhere else in the country
Pet? the dog or cat
Darling - what everyone is called so you don't have to remember names
Children - small people
Sandwich - sandwich (and it does have a "d" in it)
Supper (1) - what old people (older than me) have in the late evening
Supper (2) - dinner in the kitchen and managing expectations as merlotgran said.
Sitting room - sitting room or if very large drawing room but never lounge. I can hear it now "lounges are in public buildings" followed by my Sunday name.

This just makes me think of the Pygmalion quote "It is impossible for an Englishman to open his mouth without making some other Englishman hate or despise him." It mattered so much to my mother and my teachers but I don't think (hope!) it does now.

Dinner = evening meal
Tea = late afternoon cuppa with cake/biscuits
Supper = late evening snack, e.g. cheese and biscuits
Lunch = midday meal
Going to London = going to London from anywhere else

A sandwich is a sandwich unless the filling is chips and then it is very definitely a chip butty .

But Gracesgran, do you actually pronounce it 'sand-wich'?

Oh dear! We have a lounge and (two) toilets as opposed to lavatories.
Very non-U.

Don't you ever have bacon butties, Ashtree?
You haven't lived
And sandwiches definitely have the d pronounced!