London Buses route 661 is a Transport for London contracted bus route in London, England. Running between Petts Wood and Chislehurst, it is operated by London Central.
In 2004, the route was converted to low floor operation with the MCW Metrobus replaced by a Plaxton President bodied Volvo B7TL.
On 3 October 2009, East Thames Buses was sold to London General, which included a five-year contract to operate route 661.
On 1 May 2010, the operation was transferred to London Central operating from their Bexleyheath (BX) garage.
On 4 October 2014, the route was retained by London Central.
Route 661 operates via these primary locations:
- Petts Wood Station Station Square
- St Mary Cray Station
- Chislehurst War Memorial, Centre Common Road