Damas de guerra

I am currently watching Home Fires tv series in Denmark. I remember the Second World War very clearly and the producers have tried to recreate small town life in the 40's with a degree of success. However, I cannot understand why they don't have the scripts checked and get advice about wartime pronunciation. For example, I have heard two actors say 'skedule' and not schedule. Nobody said the American pronunciation which became popular during the 'Friends' long running comedy series among younger viewers. And the young lad on the farm greeting a lady exclaiming 'Hi !' This was impossible! Greetings were more formal in those days. Even so, the series is so well acted and I love the story line. I really wish ITV would have continued the series as the writers created many strong characters.