Before Father Brown rides off from the hospital on the scooter, he ostentatiously fastens the chin strap of the helmet. On arrival at his destination, the helmet is unfastened once again.
In Charlotte's hospital bed scene, her IV tube is shown using an iteration of a Halkey-Roberts tubing clamp not in use until the early '90s. Further, these are made of Acetal Polymer not commercialized in products until 1961.