Most house locks are trivial to pick in about 30 seconds, and what I've seen of "smart" locks isn't much better. I think if you were really serious about preventing intruders (rather than discouraging opportunism) you need alarms and cameras and someone with a big stick.
The typical night latch (Yale lock) is super easy to pick, but it wouldn't be easy to get UK insurance without a 5 or 7 lever Chubb lock, or one of the newer security locks. So pretty much everywhere has one - and quite often both. Newer doors tend to have multiple bolts in three places, operated by the single security key.
Just a night latch might be used for internal doors, or a garden shed.