I can't ever remember having anyone to tea at our house, Mum didn't encourage it.
Sunday tea at our house varied a lot.
We had sliced brawn, or ham, tongue, all cut very finely by our local butcher - one thin slice each. Or pork pie. Occasionally we might have tinned salmon or corned beef. Dad once brought home some Spam.
I like Heinz sandwich spread which I recently re-tried. It's not the same
I loved it with cucumber.
In summer this lot would be eaten with salad and mashed or new potatoes.
We had the celery in the drinking glass as well, my sister always had first dibs on the new, fresh shoots from the middle.
Salad was bought from the allotments up the street. I've never had spring onions as good again, deliciously strong.
For dessert it was usually tinned, sliced peaches (fruit salad on special occasions) with either Carnation or that thick, reduced Nestles cream from a tin. Sometimes 'top of the milk'.
Mum was a good baker, so there would have been jam or lemon tarts, or fruit cake but I always preferred the savoury stuff so if there was any salad left, I'd scoff that with a slice of bread rather than have a piece of cake.
Mum had several great aunts and we often visited them.
Same bill of fare: Auntie Minnie used to make a wonderful 'choppy' which I still make.
Fresh mint, green tops of spring onions, often a bit of dandelion or nasturtium leaf to give it bite. All this very finely chopped then covered with a mix of vinegar, a pinch of sugar and hot water.
Auntie Minnie would make this before we arrived so it was cold. It wasn't until she taught me how to make it I realised she used hot water. 
She served Coconut macaroons and Parkin, Madeira cake, or Eccles cakes. Like me, she made her own Cream Crackers to have with a variety of wonderful cheeses.
Blimey, I've just written enough to fill a book 