The location used to portray York Hospital in the series is in fact the city's Crown Court building, while a private hospital (Purey Cust Nuffield Hospital) provides a location for Jerusalem Chambers.
In the beginning narration the narrator states that the lawyer is lying in a cornfield, when he is actually in a wheat field.
In British English, what Americans call wheat is called corn. In Britain, what Americans call corn is called maize.
Tobias Menzies and Hattie Morahan were both at Frensham Heights School together but not in the same year - there's about 5 years different.
In British English, what Americans call wheat is called corn. What Americans call corn is called maize in Britain.