I love this thread
Not having dd up until midnight when she was 9
Letting her wear 'just a tshirt' on top when it was cracking the flags and all the locals were still in vest, shirt, jumper, jacket, hat and scarf
zebra crossings - but now the law has changed, so they can no longer be used as target practice by motorists, well not legally
Being offered paracetamol on prescription on every visit to the gp's (no wonder there is a special tax to pay off the debts in the healthcare system) - and it's a branded one, not just the equivalent of bp.
Gp being willing to do home visits - to be fair, it's 2 minutes away, and he get an extra 9? for 400m drive.
All smear tests being carried out by male drs, and not a chaperone in sight - and, worst of all stirrups - oh yes, and being engaged in polite conversation while he was first having a root around when doing the smear, and then during a very 'vigorous' breast examination. Bet he's good at kneading bread and scrubbing kitchen floors. 
The assumption that we must know every brit with a holiday home within a 20mile radius, or that we must have known them when we lived in the UK.
Agree with the automatic hello and goodbying in shops. Used to find myself doing it when went back to England after holidays, and getting weird looks. However, we lived in a place where the owner of the local indian used to shake dh's hand when he saw him in the square, so perhaps not so odd.