A Jewish family is shown making a blessing before a meal. The family members clasp their hands and bow their heads. Jews never clasp their hands or bow their heads when making this blessing. Hand-clasping is never part of Jewish prayer, and bowing occurs only in a very specific type of prayer which isn't performed at meals.
The subject of National Health Care is depicted as an issue. It was instituted in Britain two years later in 1948.
The anti-Semitic graffiti left by the neo-Nazi mob are the letters " P J, " which stands for Perish Judah.
The character of Charles Lucas is based on Sir Oswald Moseley, a British pro-Nazi who was interned from 1940-1943.
The external shots of the Greenfelds' house, where Lea Fisher stays, were filmed at St. Giles House, 78 Rodney Street, Liverpool.