Where was The Trollenberg Terror filmed?

1958 film by Quentin Lawrence

The Trollenberg Terror (1958) was filmed in Middlesex, Southall and Southall Studios, 3 places named in its Wikipedia article, 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.

See them on the map → Wikipedia Source data