In the opening credits cast list, Margaret Lockwood is listed as Catharine. However, in the note she leaves for Geoffrey (Hugh Williams), she signs off as Catherine.
The story is a day out to Brighton and while there are shots of Waterloo Station the train is seen leaving from Kings Cross.
An expectant mother just about to enter the operating room for delivery is shown stretched out on a gurney. She does not appear in the least to be pregnant.