Log in to your Digital Garage - regit.cars/login.
Once you're in your Digital Garage click on Settings.
Head over to Your Details or click Manage Account Details where you'll be able to de-activate your account (you can find this at the bottom right, just below your password).
We'd be sorry to see you go. If you have any feedback or suggestions on how we can improve we'd love you to contact us at firstname.lastname@example.org.