You haven't a Sky account:
You have received a voucher and would like to use it to create your Sky account. To do this, visit our website and click on Subscription at the top.
Follow the given steps until you get to the summary (3. Payment):
Type in the voucher code you received in the space provided and click on Submit.
If the voucher has been recognized by the system and is still valid, a green confirmation message appears. Then all you have to do is accept the terms and conditions, update / enter your payment details and complete the process by clicking on the confirmation button.
You already have a Sky Account:
If you have received a voucher for a monthly pass (sport / show) or day pass (sport only), you can activate it as follows.