Where was RKO 281 filmed?

1991 historical drama film directed by Benjamin Ross, about the 1941 film Citizen Kane

RKO 281 (1999) was filmed in London, Victoria and Albert Museum, St Pancras railway station, Guildhall and St. Pancras Renaissance London Hotel, 5 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.

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