Downton Abbey filmed at Lancaster House, London. Interiors standing in for Buckingham Palace were shot in this government-owned mansion for a 2013 special where a young lady is presented to the king. On screen it's Buckingham Palace interiors.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
Planning the trip? The United Kingdom travel atlas covers money, language and getting aroundand everything filmed in London is on one page
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in London and it tells you what was shot around you, how to get there, and whether you can actually go in.
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