Isleworth is a small town of Saxon origin sited within the
London Borough of Hounslow in west
London,
England. It lies immediately east of the town of
Hounslow and west of the
River Thames and its tributary the
River Crane. Isleworth's original area of settlement, alongside the Thames, is known as 'Old Isleworth'. The north-west corner of the town, bordering on
Osterley to the north and
Lampton to the west, is known as 'Spring Grove'.