The Wicked Lady filmed at Tollgate Road (private residence), Colney Heath. The Elizabethan mansion at this private Hertfordshire house forms part of Lady Skelton's home. On screen it's Maryiot Cells.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer. This is a street or a long feature — the coordinate is a representative point on it, not a single spot.
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Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Colney Heath and it tells you what was shot around you, how to get there, and whether you can actually go in.
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