Finding my locations with Google Maps

As I am producing an action British spy movie, the iconic location i thought i should use was London.
I spoke to my actors and arranged a day where we all can go and get shot all around London using the London underground.
A really helpful web page that I used to find the scenes that I wanted was 'Google Maps'.
using this allowed my to find how to get to the locations of filming and find out what the shot would actually look like.