We still have milkmen, and the glass bottles, in this village (in South Cambridgeshire). The dairy is three miles away.
School milk was in bottles of one third of a pint. It tasted foul sometimes because the cattle were on some winter feed made, if I remember rightly, from root crops.
Full cream milk is not a description you see now much,if at all. You see 'full fat' milk; there may be some weasel word distinction there . Full cream milk from a Jersey herd would, for some part of the year, be nearly as much cream as milk.