England

Thorney Island

Thorney Island was the eyot (or small island) on the River Thames in Westminster, in Anglo-Saxon London, where Westminster Abbey and the Palace of Westminster (commonly known today as the Houses of Parliament) were built. It was formed by rivulets of the River Tyburn, which entered the Thames nearby

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Thorney Island

Part of the England islands map.

Geology

Bedrock: Thames Group (Clay, Silt, Sand And Gravel), Eocene–Eocene. Superficial deposits: Alluvium (Clay (Undifferentiated) And Silt (Undifferentiated) And Sand(Undifferentiated)). Contains British Geological Survey materials © UKRI 2026, licensed under the BGS Open Data Licence (OGL v3.0). Source: BGS DigMapGB-625 Bedrock & Superficial WMS.

Nearby and related islands

Sources

Last reviewed: 2026-08-13.