The River Cray is a river located in southeast London, England. It flows through the London Boroughs of Bexley and Bromley, eventually joining the River Darent. The river is approximately 10 miles long and is known for its natural beauty and wildlife, making it a popular spot for walking and outdoor activities. Historically, the River Cray has played a role in the local economy, providing water for agriculture and industry. It is also part of the Cray Riverway, a network of paths and green spaces that promote conservation and recreation along the river's banks.