Church Island, River Thames

Church Island or Church Eyot is an inhabited island in the River Thames in England on the reach above Penton Hook Lock in Staines-upon-Thames, Spelthorne, Surrey. It is in the upper part of the reach. It is approximately 200 m (660 ft) above Staines Bridge, but is thought by some historians to have been the site of the Roman bridges (Pontes) across the Thames recorded as a waypoint on the Devil's Highway between Londinium (London) and Calleva (Silchester).

This inhabited islet connects by a footbridge to Church Street, Staines, adjoining The Lammas recreation ground and mini-golf course and 100m below the oldest of the town's three Anglican churches, a Grade II* medieval structure.St. Mary's Church is on a small rise, elevated 5 metres above river level, and 21 metres above sea level, as such, from its steeple the island is visible. The island is 100m long and almost triangular, and rises no more than 1 metre above river level. The narrow channel between the island and north bank (backwater) forms a small oxbow away from the course of the river.

The island is in the upper part of the reach which has a WNW/ESE axis above Staines Railway Bridge and different, north/south axis below that bridge. Staines Bridge is 200m downstream.

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