Gett is an international taxi hailing app. I recently discovered a code for a free taxi ride worth £30!

The code is published in their official blog in the post regarding iced coffee delivery. The post was published back in August 2015.
The code is only available for new customers and was successfully used a few days ago by one of my friends.
The promo code for £30 credit is: GETT30

About Gett
This app only uses black cabs, which are regulated by the TfL. You can make a booking up to two weeks in advance.
One of my their unique features is they allow to use only part of your promotional credit in one go, so you can use the rest later.
Don’t forget that you also have a regular ongoing offer of free £10 credit for all new customers.

Free £10 promo code: GTDBJWD

You can read more about free taxi travel in London in my other post here.

Please share in the comments if the code worked or if you have discovered other promo codes.