This happened a while ago but interested to hear what others would have done as I've been told I overreacted.
We lived in a flat and often heard the couple above us having screaming rows like properly yelling at each other, slamming doors, etc. It all sounded quite two sided but you never know.
One day I was getting ready for work (alone in the apartment) and heard a loud scream from upstairs. It was a woman's scream and quite loud and distressed. I called the police and told them what I'd heard and they sent someone out. I left for work at this point but later got a call from the building concierge and they were annoyed I'd called the police rather than them and said that there wasn't anything anyone could do anyway as no-one had answered the door. Of course you wouldn't answer the door if you'd just murdered your wife!!
WIBU to have called the police? I've probably been listening to too many true crime podcasts and it seems quite often neighbours will hear a scream or something but not call the police because they don't want to bother anyone so on that basis I think I was being totally reasonable but what do you think.
Disclaimer: not based in the UK so police response and follow up is a bit lacklustre.