Where was The Crimson Pirate filmed?

1952 film by Robert Siodmak

The Crimson Pirate (1952) was filmed in Naples, Ischia, Gulf of Naples, Middlesex, Teddington and Aragonese Castle, 6 places named in its Wikipedia article, in the United Kingdom, Italy. 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