<Table> London trolleybus system <Tr> <Td_colspan="2"> Preserved British United Traction trolleybus on Regent Street in June 2014 </Td> </Tr> <Tr> <Th_colspan="2"> Operation </Th> </Tr> <Tr> <Th> Locale </Th> <Td> London, England </Td> </Tr> <Tr> <Th> Open </Th> <Td> 16 May 1931 (1931 - 05 - 16) </Td> </Tr> <Tr> <Th> Close </Th> <Td> 8 May 1962 (1962 - 05 - 08) </Td> </Tr> <Tr> <Th> Status </Th> <Td> Closed </Td> </Tr> <Tr> <Th> Routes </Th> <Td> 68 </Td> </Tr> <Tr> <Th> Operator (s) </Th> <Td> London United Tramways (1931--1933) London Passenger Transport Board (1933--1947) London Transport Executive (1947--1962) </Td> </Tr> <Tr> <Th_colspan="2"> Infrastructure </Th> </Tr> <Tr> <Th> Electrification </Th> <Td> <Ul> <Li> <Ul> <Li> <Ul> <Li> V DC parallel overhead lines </Li> </Ul> </Li> </Ul> </Li> </Ul> </Td> </Tr> <Tr> <Th> Stock </Th> <Td> 1,811 (maximum) </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Preserved British United Traction trolleybus on Regent Street in June 2014 </Td> </Tr>

When did the last trolley bus run in london