green plaque · London

GCHQ

1919-1921 The first home of GCHQ The Uk's intelligence, security and cyber agency known then as GC&CS, formed from the Admiralty's Room 40 and the War Office's MI1(b)

Inscription drawn from imported open data, awaiting original TributeLegacy editorial.

Source: Open Plaques. Geographic data via OpenStreetMap.

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Data sources

Location records are drawn from open, licence-clean datasets, kept here with attribution and gratitude to the people who maintain them.

Open Plaques, dedicated to the public domain (CC0). See openplaques.org.
Wikidata, available under the CC0 1.0 Universal dedication.
Historic England, National Heritage List for England, used under the Open Government Licence v3.0. War memorial records are drawn from open community datasets (OpenStreetMap, Wikidata, NHLE) — never from the Commonwealth War Graves Commission, which is excluded.

Editorial descriptions, photography and tribute links are original TributeLegacy work, layered on top of the open data.