Not on O2? Get your free O2 sim card to claim yours.
Thorntons are giving away FREE Personalised Advent Calendars on the O2 Priority app! Pick up this fun, personalised calendar that features Santa, reindeers and penguins. Kids (and adults) of all ages will love this traditional and colourful calendar.
Follow the link now to find out more and simply download the app and head to your nearest Thorntons store to show your unique code and redeem.
This is only available for a week so claim yours now to avoid the disappointment of missing out. Behind each window is a delicious and classic Thorntons chocolate treat so trust us, it's definitely not one you'll want to miss out on.
Do you know anyone on O2? Don't forget to tell them about this fab offer too!