Salan - I think you are thinking of something like a jam roly poly, which is a sort of suet pudding rolled up in a muslin cloth and steamed. I don't think anyone makes those at home any more, although puddings have suddenly become fashionable and are being sold in upmarket retro restaurants.
As for lemonade - yes, that is tricky! In supermarkets and most restaurants, if you ask for lemonade you will get something akin to Sprite or 7-Up (yuk). My mother used to make real lemonade, a still (ie not fizzy) drink made with lemons and sugar, and you do very occasionally get that in cafes. Squash - which is more often orange or blackcurrant (eg Ribena), although you can now get some rather superior ones like Rock's in all sorts of flavours, including some very good elderflower ones -although these would call themselves cordials - is a concentrated drink that has to be diluted with tap water, or with fizzy water if you wish. At least that's how it is in England. In Scotland, just to complicate matters, they tend to call all soft drinks "juice" - this really threw me when I first arrived here, as to me, "juice" means pure orange/apple/etc juice, not something full of extra sugar or sweeteners. In Aberdeen in particular, you will often hear people telling their children to "drink your juice" - when the child has been provided with a bottle of some disgusting neon coloured fizz.
Gumtree - yes humbugs are definitely a form of boiled sweet, I would say. Steph - your hard candy must be the US equivalent. Isn't it funny how certain things in our childhoods have a certain kind of cache? When I was very young, our neighbour's husband worked at Harrods (which was much more exclusive than it is now). He used to bring us bags of "misshape" sweets from their confectionery dept, and I used to think these were the last word in sophistication - I also imagined that he must be the managing director at least. He was in fact one of the store porters, a very kind and generous man. His daughter, the exotically named Coral, married an American and went to live in California - even more exotic! Then she had a son called TJ or something - my goodness how dull our lives seemed compared to theirs.
I also had a whole collection of hardback Enid Blyton books that were handed down from my mother's friend's daughter Sally. To me, Sally was amazingly grown up and exciting (she was probably then all of 12 as she is about 6 years older than me), which made those books very precious.
Iced coffee unfortunately sounds ten times more fattening than iced tea. The only kind of iced tea we get is Liptons, which, as I think I have already said, is probably nothing like the real thing.
Rosemary