The force told the BBC that the new drones were quicker, quieter, cheaper and more environmentally friendly than police helicopters, while delivering the same operational results.
Drones will be launched only as a response to a 999 call, the Met added, and will be piloted by trained operators remotely from the force control room.
The Met said drones would arrive on the scene within two minutes and from there would stream footage to assist officers.
The drones will be used for “a variety of incidents, including searching for missing people, tracing a suspect, or arriving quicker to capture evidence at the scene of an incident”.
Mr Taylor said the Our Drone as First Responder programme “will assist in tracing suspects, locating missing people and delivering intelligence to our officers as they respond to Londoners when they need us most”.
He added: “We are building a Met that is more precise and efficient than ever before, and this new technology gives us a vital new tool to tackle crime in the capital.”