Charing Cross underground station is on The Strand, it is on the Northern Line (black) and the Bakerloo Line (Brown).
London Bridge Underground Station. It's on the Northern Line, which is black on the map. And it's near London Bridge, not Tower Bridge.
That station will be Tower Hill, on the Circle and District lines, with the nearby Fenchurch Street railway station, and DLR terminus, Tower Gateway. This station is also near to the Tower Bridge.
Tower Hill tube station was created in 1967.
Tower of London tube station ended in 1884.
Tower of London tube station was created in 1882.
Putney Bridge tube station was created in 1880.
Upminster Bridge tube station was created in 1934.
The closest tube station to London Zoo is Camden Town Station. From there, it is about a 15-minute walk to the zoo.
Tube
South Kensington Station
Tower Hill station on the District and Circle lines.
Westminster or Waterloo