Separate hot and cold taps. Why?? Ever wondered why they haven't caught on in any other developed country? I mean, we could have mixer taps for example, from which one can obtain hot, cold, and also beautifully warm water? Wouldn't that be nice?
Old-fashioned trains with doors that require the traveller who wishes to leave the train at a station to push down the window, lean out and over and then push down the outside door handle because there is no fucking door handle on the inside of the door. Just why??? Who designed this?
(You trendy London types may not believe it but this is the reality of (very expensive) train travel in the south west.)
People saying "Yeah, I know exactly what you mean, it's just like..." which is then inevitably followed by an example that has nothing to do with what I just said.
People using the word "music" when it is obvious they mean "pop music", completely disregarding the existence of other types of music.
The same goes for people using a commonplace word such as "bank" to mean their specific workplace. "The Bank". This applies to anyone working for the World Bank (I mean, it's not even a bank), and the Bank of England.
People using outdoor trainers in the gym studio area. Any outdoor shoes really.
And don't get me started on sauna etiquette in this country (or rather the lack of such etiquette). Soggy swimsuits straight from the pool, no towels, the benches dripping wet, loud chatting. All of these should be criminal offences IMO.