An accident in Beddington Lane caused part of it to be shut both ways as traffic piled up.
The 455 and 463 bus services are back to their normal routes following the road traffic collision near Derry Road.
Traffic has now eased and the accident has now been cleared.
In a tweet, Transport for London (TfL) confirmed the buses are no longer on diversion.
Routes 455 463 have resumed serving Beddington Lane, CR0 following earlier road traffic collision
— TfL Bus Alerts (@TfLBusAlerts) October 1, 2018
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