Where was The Turners of Prospect Road filmed?
1947 film
The Turners of Prospect Road (1947) was filmed in White City Stadium and Clapton Stadium, 2 places named in its Wikipedia article's Production section, in the United Kingdom. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.
Places per Wikipedia's Production section
Wikipedia’s Production section names 2 places. Each links to the sentence that says so.
