Andersey Island is a 273-acre (110.5 ha) area of flood-meadow and former flood-meadow south-east of Abingdon Bridge, Abingdon, Oxfordshire on the reach above Culham Lock in which parish it lies however maintaining close links with Abingdon by virtue of its current amenities. It is the second-largest island of the non-tidal course of the River Thames in England upstream of the Tideway — if disqualifying the villages of Dorney and Eton, Berkshire enclosed by the engineered Jubilee River. Andersey means Andrew's island after its chapel to St Andrew, demolished, built about 1050 CE.