1. Login to your account at http://youraccount.nimbushosting.co.uk. If you need to reset your password, you can do so with the Account -> Forgot Password button.
2. Enter your account email address and password.
3. Once logged in, click on Domains -> Renew Domains.
4. Once clicked, you'll get a list of all the domains in your account with Nimbus due for renewal.
5. To renew the domain, first, click the checkbox next to the relevant one(s) and then chose the renewal period using the dropdown to the right. The amount of time you can renew for will depend on the domain type.
6. Once you have set those you would like to renew, click 'Order Now' and you will be taken through to the usual checkout screen to process payment.