Lechlade (ˈlɛtʃleɪd) is a town at the southern edge of the Cotswolds in Gloucestershire, England, south of Birmingham and west of London. It is the highest point at which the River Thames is navigable, although there is a right of navigation that continues south-west into Cricklade, in the neighbouring county of Wiltshire. The town is named after the River Leach that joins the Thames near the Trout Inn and St. John's Bridge. The low-lying land is alluvium, Oxford Clay and river gravels and the town is surrounded by lakes created from disused gravel extraction sites, forming parts of the Cotswold Water Park; several have now been designated as Sites of Special Scientific Interest and nature reserves. Human occupation dates from the neolithic, Iron Age and Roman periods and it developed as a trading centre served by river, canal, roads and railway, although the station closed in 1962. The Anglican Church of St Lawrence is a Grade I listed building dating from the 15th century. The development of the nearby RAF Fairford and RAF Brize Norton after World War II contributed to the expansion of the town. A neolithic cursus was discovered from cropmarks on aerial photographs was identified in 1943. There are several archaeological remains of dwellings from the Iron Age and Roman periods, which have now been scheduled as an ancient monument. William the Conqueror gave the manor of Lechlade to Henry de Ferrers, who had accompanied him to England in 1066, and the manor is mentioned in the Domesday Book. A charter granting market to the town was passed in 1210. Lechlade Priory was founded in the early 13th century and lasted until 1472. The town developed as a trading centre linked by the river, canal, roads and railway. The town's railway station opened in 1873 and closed in 1962. The development of RAF Fairford and RAF Brize Norton after World War II increased local employment and the need for housing. Lechlade falls in the Kempsford–Lechlade electoral ward. This ward stretches from Lechlade in the east to Kempsford in the west.