Route 464 runs from Tatsfield to New Addington. You can view the map and the timetable on the Bus Times website, as well as the history of the bus route on the London Bus Route Histories website. As part of route 464 is on diversion, it has been revealed that Thames Water is providing a feeder bus service out of their funds.
Taking a look through the Freedom of Information disclosure log on the Transport for London (TfL) website, they have published information about the route 464 feeder bus service in south of Greater London.
My article is in response to BusAndTrainUser's article reviewing his experience with the 464 feeder bus service.