@Crunkle_Foreskin I first thought US actually, since they also have a cultural hierarchy. I never worked in the UK, but maybe this same kind of hierarchy exists in UK workforce as well?
Anyway, I'm from The Netherlands. And often the Dutch are very direct. Ask direct questions. Speak-up. Etc. Of course it also depends on the person, people who are very shy remain silent.
I understand you are also afraid to lose your job if you are still in your probation period.