The period locomotive seen in this film is called "The Lion". It was one of the very first locomotives in the world, and was built in 1837 to transport passengers and luggage on the world's first passenger railway line between Liverpool and Manchester. It was rediscovered in 1923 and restored to working order. It is now on display in the Museum of Liverpool.
Although Mary Morris (The Duchess of Kent) played the mother of Anna Neagle (Queen Victoria), she was eleven years her junior in real life. It was Mary Morris's debut.
Anna Neagle (Queen Victoria) was married to the director Herbert Wilcox from 1943 until his death in 1977.
When the play Victoria Regina was written in 1935, it was banned from the London stage on the grounds that depictions of royals were not allowed. But its success on Broadway and the enthusiasm of Victoria's grandson, Edward VIII meant that Herbert Wilcox was commissioned to turn the story into a film to celebrate the centenary of Victoria's accession to the throne in 1837.
In 1937 the film was awarded the Venice Film Festival Gold Cup of All Nations.