51°30′15″N 0°07′33″W / 51.5042°N 0.1258°W
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Gwydyr House (Welsh: Tŷ Gwydyr) is a Grade II* listed[1] mansion in Whitehall, and is the London headquarters of the Office of the Secretary of State for Wales. The house lies on the eastern side of the street, opposite Dover House.
- ^ Historic England. "Gwydyr House (Welsh Office) (1066107)". National Heritage List for England. Retrieved 3 July 2018.
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