When I was a kid we got milk in tall skinny glass bottles, then it changed to be shorter dumpier ones (no fat shaming modern milk bottles, just an observation
) I can remember vigorously shaking them to get the cream mixed in before making tea with it. Denting the foil top with my thumb to release the lid. And when it froze in winter and pushed the lids up.
It seems nicer how it was, looking back...
We are now pretty exclusively green semi skimmed and I can't imagine putting full fat in tea. The gold top Jersey milk makes nice hot chocolate so we occasionally get that for treats. Red is too watery for tea, blue is too creamy, green is baby bear!