Chertsey is a town in the Borough of Runnymede, Surrey, England, 29 km (18 mi) south-west of central London. It grew up round Chertsey Abbey, founded in 666 CE, and gained a market charter from Henry I. A bridge across the River Thames first appeared in the early 15th century. The River Bourne through the town meets the Thames at Weybridge. The Anglican church has a medieval tower and chancel roof. The 18th-century listed buildings include the current stone Chertsey Bridge and Botleys Mansion. A curfew bell, rung at 8 pm on weekdays from Michaelmas to Lady Day ties with the romantic local legend of Blanche Heriot, marked by a statue of her and the bell at Chertsey Bridge. Green areas include the Thames Path National Trail, Chertsey Meads and a round knoll (St Ann's Hill) with remains of a