Where was The Yellow Balloon filmed?

1953 film by J. Lee Thompson

The Yellow Balloon (1953) was filmed in Chelsea, Queensway tube station, Bayswater and Elstree Studios, 4 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