England

Ash Island

Ash Island is a forested, drop-shaped island in the River Thames in England, across the weir of Molesey Lock within Greater London on its border. In the same way as Hampton Court, Ash Island's post town is East Molesey (KT8) and the island is administratively within the London Borough of Richmond up

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Ash Island

Part of the England islands map.

Geology

Bedrock: Thames Group (Clay, Silt, Sand And Gravel), Eocene–Eocene. Superficial deposits: River Terrace Deposits (Undifferentiated) (Sand And Gravel). 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.