Where was The Belles of St Trinian's filmed?

1954 film by Frank Launder

The Belles of St Trinian's (1954) was filmed in Shepperton Studios, 1 place named in its Wikipedia article's Filming 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.

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