Lots of linguistic anachronisms. For example, in Episode 1 the word striker is used to describe a football forward, this term emerged in the 1970's and in Episode 2 someone uses the exclamation "Oh my days" which, although first noted in the late 19th century, was virtually unheard and only became commonplace in the 21st century.
The bowerbird shown briefly is a satin bowerbird - and they do have a preference for blue bits of stuff to adorn their bower.
The Ten Pound sea fare would be worth around £300 seven decades on - even with the huge increase in cruise ships (improving value for money) today this would only be enough to pay around 5% of a one way fare, so they really were a huge bargain in the 1950's.