Bus routes through Kingston, Tolworth, Surbiton, New Malden and Chessington are being reviewed by Transport for London (TfL).
Councillors are being asked for feedback on whether the routes should be continued when contracts are up for renewal between March and October 2012.
School bus services are also under consideration.
A spokesman for TfL said it was part of the standard procedure for reviewing routes. If there were any suggestion of cuts or changes, there would be a public consultation, she said.
The routes are: The express service X26 from Heathrow to West Croydon via Kingston and New Malden.
Route 465 from Dorking to Kingston via Chessington and Surbiton.
Route 406/418 from Ewell to Kingston via Tolworth and Surbiton.
Route 965 from Tolworth station to Sainsbury via Kingston.
School bus services are also being considered: Route 613 Glenthorne High School, from Worcester Park
Route 665 Holy Cross School, from Surbiton
Route 671 Tiffin Girls School, from Chessington
Route 691 Hollyfield School from Hampton
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