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Free GBK Burger

Unfortunately, the offer you were looking for has now expired. Sorry!

There are 50 free burgers per location. If you have the GBK app, on Monday 26th June you can try their new Big Mouth burger for free! All you have to do to get it is head to your local GBK, show them your app and say "SIZE MATTERS" when you order.

You'll get a free Big Mouth burger from the lovely folk at GBK! There are 50 up for grabs in each restaurant, it's first come, first served and you are only allowed to eat your freebie in the restaurant - no takeaways!

Make sure you've alerted fellow GBK fans about this great freebie, all they have to do is check their app on Monday 26th June. Yum! I can't wait to grab mine...