In Japan, they have a website called Hyperdia http://www.hyperdia.com/ which is really useful to find rail connections. Ie you put place of origin and destination and it will spit out 5 alternatives for you. subway to skinkansen etc.

Is there a similar website/ android app for the UK. For example I need to go from Fulham Broadway (a tube station ) to White Hart Lane ( an overground station). what will i have to do to get there?