Morden, but it's a considerable way away. It's better to take a mainline train into the city.
The closest tube station to London Zoo is Camden Town Station. From there, it is about a 15-minute walk to the zoo.
South Kensington Station
The closest tube station to the Neasden Temple is Neasden Station, which is on the Jubilee Line. It is approximately a 15-minute walk from the station to the temple. Alternatively, you can also take a bus from the station for a more direct route.
Westminster or Waterloo
Custom House Station on the DLR.
Westminster
kings cross .x3
Aldgate East station is the closest station to Brick Lane. Liverpool Street is also nearby.
Her Majesty's Theatre is located in Haymarket London. The closest tube station is Piccadilly Circus.
Hammersmith
Victoria is the closest
You can't travel to West Thurrock by tube, you will have to take the overhead train.