Where was the Road to … film series filmed?

The Road to … film series has 2 titles (1940 to 1962). Wikidata records no filming place for them; Wikipedia names Shepperton, Shepperton Studios and Los Angeles County Arboretum and Botanic Garden. Every place links to its source.

The productions, in order

Named in Wikipedia's own articles

Places named only in the titles’ Wikipedia articles.