Peabody Avenue and Churchill Gardens Estate Big Local area is located in south Westminster. The area is bordered to the south by the River Thames and to the west by a railway line. Around 8,500 people live in the area and a large number of households are made up of families with children and older people. The listed Churchill Gardens Estate, the single largest estate in Westminster, consists of 40 blocks of between four and nine storeys. The Peabody Avenue Estate is much older and smaller, and was used as a blueprint for estates across London.