Mary Queen of Scots filmed at Great Barn, Harmondsworth. This enormous tithe barn stands in for Elizabeth's stables. On screen it's Elizabeth's stables.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
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Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Harmondsworth and it tells you what was shot around you, how to get there, and whether you can actually go in.
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