The radio announcer advertising the 1970 Miss World says that the eyes of the world are once more on London for the first time in nearly 30 years since the Coronation, which took place in 1953, only 17 years earlier.
The TV announcer says that "50 of the most beautiful girls" will be competing. There were actually 58 contestants in Miss World 1970.
Eric Morley's bedside phone rings in the American style, not with the standard UK double ring.
Bob Hope seems to be using only one scriptwriter, the hapless "Archie", who travels with him to the UK from America. Hope was legendary in show business for employing around 20 writers full-time and rarely traveled abroad without at least six of them, although in Britain, he often used local talent as well, notably Denis Goodwin and Barry Cryer.
When Sally outlines what she wants to write about in her thesis, one of her professors says that the subject is "rather niche" - the use of the word "niche" in an adjectival sense is very much a phenomenon of the 21st century, and not something anyone would have said in 1970, least of all an academic. Similarly, the phrase "it's not rocket science" is used twice in the film, although this did not become commonplace in Britain until the 1990s.