Steps of London is an ongoing project. We are in the process of counting the number of permanent steps a traveler must walk up/down in any London underground station, depending on where you're going.
For instance, you are planning to go abroad and don't want to take a taxi to Heathrow airport, so you want to know how many escalators and stairs you'll have to climb at certain stations. Then you come here! Type in the station you need to know about, and up comes the answer!
This will take quite some time, so keep checking back!