I quite enjoy looking for anachronisms and other errors in films, particularly architecture that is wrong for the supposed location.

I believe that aircraft in most war films are later models as there are seldom surviving examples of the actual combat aircraft. Not being an aircraft buff I don't notice that.

In first of the revived Doctor Who shows the Doctor and Rose are shown running over Westminster Bridge with night buses running past. Rose phones her mother who is shopping.

Also in Doctor Who the "London" street scenes are often shot around Cardiff and the architecture is just wrong.