This is going to start a fun transatlantic flame war:
I hate mixer taps (faucets).
With separate taps, the cold water tap is cold and the hot water tap is hot. If you want them mixed, then combine them in the bowl.
Almost every day, I burn my hand by turning on the cold tap and getting hot water flowing out because a family member has just finished running the mixer tap to produce hot water, which is still in the pipes.
It’s not a massive rant, I’m not going to sue anyone or campaign against mixer taps, but let the war begin: