The new SPLYT app is offering discounts and a new way to share the fare.
A new taxi app is being launched in the capital today to try and get more people to share the fare.
It's a greener and potentially cheaper way of getting around.
As part of the launch of the London SPLYT app they are offering 99p cab rides for a whole week.
Philip Mintchin is the founder of the app, and joined London Live News to explainhow it works.