Left foot braking may work for a small number of skilled drivers, but it isn't something I would recommend for everyone.

As mentioned in my original answer, braking times increase because of the effort required to transfer your left foot from the footrest to the brake. What's more, if you brake with your left foot in an auto, there is a high chance you may mistake the clutch for the brake when attempting to slow down in a manual car.

I appreciate skilled drivers can master left foot braking very quickly. But when it comes to giving general driving advice to millions of motorists, I will always recommend using your right foot for braking.