Where was The Frightened Man filmed?
1955 film by John Gilling
The Frightened Man (1955) was filmed in Twickenham Film Studios and Riverside Studios, 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.
