A day spent visiting Kew Gardens and Kew Palace. A simple train trip from London Bridge to Kew Gardens Station.
Tube Route
London Bridge (Jubilee Line: Westbound to Stanmore) zone: 1
    Southwark 
    Waterloo 
    Westminster (Change for District Line: Westbound to Richmond) zone: 1
St. Jame's Park 
    Victoria 
    Sloane Square 
    South Kensington 
    Gloucester Road 
    Earl's Court 
    West Kensington 
    Barons Court 
    Hammersmith  (D & P Line) 
    Ravenscourt Park 
    Stamford Brook 
    Turnham Green 
    Gunnersbury 
    Kew Gardens zone: 3/4
Time: 46 mins via 17 stations, 1 change, zone 1 to 3