Where was The Life and Death of Colonel Blimp filmed?

1943 film by Emeric Pressburger, Michael Powell

The Life and Death of Colonel Blimp (1943) was filmed in London, Kensington, Park Lane, Gerrards Cross, Denham Film Studios, Ovington Square and 1 more place, 7 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